Dengue fever outbreaks

{{Main|2006 dengue outbreak in India|2006 dengue outbreak in Pakistan|2009 Bolivian dengue fever epidemic|2019 dengue fever epidemic|2020 dengue outbreak in Singapore}}

The first recognized dengue epidemics occurred almost simultaneously in Asia, Africa, and North America in the 1780s, shortly after the identification and naming of the disease in 1779. A pandemic began in Southeast Asia in the 1950s, and by 1975 dengue haemorrhagic fever (DHF) had become a leading cause of death among children in the region. The first case of DHF was reported in Manila around 1953 through 1954.{{cite journal|last=Gubler|first=Duane|title=Dengue and Dengue Hemorrhagic Fever|journal=Clinical Microbiology Reviews|volume=11|issue=3|pages=480–496|doi=10.1128/CMR.11.3.480|pmid=9665979|year=1998|pmc=88892}} A small child with dengue fever started to bleed uncontrollably. Other children then became victims to the new symptom.{{cite book|last=Dobson|first=Mary|title=Disease: The Extraordinary Stories Behind History's Deadliest Killers|year=2013|publisher=Metro Books|location=New York|isbn=9781435151666|pages=152–155}} Epidemic dengue has become more common since the 1980s. By the late 1990s, dengue was the most important mosquito-borne disease affecting humans after malaria, with around 40 million cases of dengue fever and several hundred thousand cases of dengue hemorrhagic fever each year.

Significant outbreaks of dengue fever tend to occur every five or six months. The cyclical rise and fall in numbers of dengue cases is thought to be the result of seasonal cycles interacting with a short-lived cross-immunity{{Clarify|date=March 2009}} for all four strains in people who have had dengue. When the cross-immunity wears off the population is more susceptible to transmission whenever the next seasonal peak occurs. Thus over time there remain large numbers of susceptible people in affected populations despite previous outbreaks due to the four different serotypes of dengue virus and the presence of unexposed individuals from childbirth or immigration.{{citation needed|date=May 2021}}

There is significant evidence, originally suggested by S.B. Halstead in the 1970s, that dengue hemorrhagic fever is more likely to occur in people who have secondary infections by another one of dengue fever's four serotypes.{{Cite journal|last1=Halstead|first1=S. B.|last2=Nimmannitya|first2=S.|last3=Cohen|first3=S. N.|date=April 1970|title=Observations related to pathogenesis of dengue hemorrhagic fever. IV. Relation of disease severity to antibody response and virus recovered.|journal=The Yale Journal of Biology and Medicine|volume=42|issue=5|pages=311–328|issn=0044-0086|pmc=2591704|pmid=5419206}} One model to explain this process is known as antibody-dependent enhancement (ADE), which allows for increased uptake and virion replication during a secondary infection with a different strain. Through an immunological phenomenon, known as original antigenic sin, the immune system is not able to adequately respond to the stronger infection, and the secondary infection becomes far more serious.{{cite journal |author=Rothman AL |title=Dengue: defining protective versus pathologic immunity |journal=J. Clin. Invest. |volume=113 |issue=7 |pages=946–51 |year=2004 |pmid=15057297 |doi=10.1172/JCI21512 |pmc=379334|url=https://works.bepress.com/alan_rothman/44/download/ }}

Reported cases of dengue are an under-representation of all cases when accounting for subclinical cases and cases where the patient did receive medical treatment.{{citation needed|date=June 2021}}

There was a serious outbreak in Rio de Janeiro during the summer of 2002 with 288,245 reported cases.{{Cite journal|last1=Nogueira|first1=Rita Maria Ribeiro|last2=Schatzmayr|first2=Hermann Gonçalves|last3=de Filippis|first3=Ana Maria Bispo|last4=dos Santos|first4=Flávia Barreto|last5=da Cunha|first5=Rivaldo Venâncio|last6=Coelho|first6=Janice Oliveira|last7=de Souza|first7=Luiz José|last8=Guimarães|first8=Flávia Ramos|last9=de Araújo|first9=Eliane Saraiva Machado|date=September 2005|title=Dengue virus type 3, Brazil, 2002|journal=Emerging Infectious Diseases|volume=11|issue=9|pages=1376–1381|doi=10.3201/eid1109.041043|issn=1080-6040|pmc=3310608|pmid=16229765}} On March 20, 2008, the secretary of health of the state of Rio de Janeiro, Sérgio Côrtes, announced that 23,555 cases of dengue, including 30 deaths, had been recorded in the state in less than three months. Côrtes said, "I am treating this as an epidemic because the number of cases is extremely high." Federal Minister of Health, José Gomes Temporão also announced that he was forming a panel to respond to the situation. Cesar Maia, mayor of the city of Rio de Janeiro, denied that there was serious cause for concern, saying that the incidence of cases was in fact declining from a peak at the beginning of February.{{Cite news

| author=Fernanda Pontes

| title=Secretário estadual de Saúde Sérgio Côrtes admite que estado vive epidemia de dengue

| newspaper=O Globo Online

| date=20 March 2008

| url=http://oglobo.globo.com/rio/mat/2008/03/20/secretario_estadual_de_saude_sergio_cortes_admite_que_estado_vive_epidemia_de_dengue-426368388.asp

| language=pt}} By April 3, 2008, the number of cases reported rose to 55,000 {{Cite news

|title=Thousands hit by Brazil outbreak of dengue

|newspaper=CNN

|date=3 April 2008

|url=http://www.cnn.com/2008/HEALTH/conditions/04/03/brazil.dengue/index.html

}}

In Singapore, the worst dengue outbreak is currently occurring. By 2 October 2020, there were more than 33,500 confirmed cases, and at least 29 deaths. This figure has exceeded the numbers of Singapore's previously worst dengue fever outbreak.{{Cite web|title=Dengue Cases|url=https://www.nea.gov.sg/dengue-zika/dengue/dengue-cases|access-date=2020-06-19|website=www.nea.gov.sg|language=en}}{{Cite web|title=Weekly number of dengue cases in Singapore surpasses 'historical high'|url=https://www.channelnewsasia.com/news/singapore/mosquito-singapore-dengue-clusters-weekly-historical-high-12831856|access-date=2020-06-19|website=CNA|language=en}}

Dengue fever occurs widely in the tropics, including the southern United States,{{cite web|url=https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5919a1.htm |title=Locally Acquired Dengue – Key West, Florida, 2009–2010 |publisher=Cdc.gov |access-date=2012-11-09}} northern Argentina, northern Australia,{{Cite journal |last1=Silburn |first1=Alan |last2=Arndell |first2=Joel |date=2024-12-01 |title=The impact of dengue viruses: Surveillance, response, and public health implications in Queensland, Australia |journal=Public Health in Practice |volume=8 |pages=100529 |doi=10.1016/j.puhip.2024.100529 |issn=2666-5352 |pmc=11282963 |pmid=39071864}} Bangladesh, Barbados, Bolivia,{{cite news|url=http://news.bbc.co.uk/2/hi/americas/7866908.stm|title=Dengue fever outbreak in Bolivia |date=2009-02-03|access-date=2009-02-26|publisher=BBC|first=Andres|last=Schipani}} Belize, Brazil, Cambodia, Colombia, Costa Rica, Cuba, Dominican Republic, French Polynesia, Guadeloupe, El Salvador, Grenada, Guatemala, Guyana, Haiti, Honduras, India, Indonesia, Jamaica, Laos, Malaysia, Melanesia,{{Clarify|date=March 2012}} Mexico, Micronesia, Nicaragua, Pakistan, Panama, Paraguay,[https://www.nytimes.com/2007/03/04/world/americas/04paraguay.html Dengue Fever Hits Paraguay] Reuters, "Dengue Fever Hits Paraguay", ''New York Times" (March 4, 2007)] the Philippines, Puerto Rico, Samoa,{{cite web |url=http://www.samoalivenews.com/Health/Dengue-Fever-Outbreak-Confirmed-In-Samoa.html |archive-url=https://web.archive.org/web/20081206092403/http://www.samoalivenews.com/Health/Dengue-Fever-Outbreak-Confirmed-In-Samoa.html |archive-date=2008-12-06 |title=Dengue Fever Outbreak Confirmed In Samoa |publisher=Samoa Live News}} Western Saudi Arabia, Singapore, Sri Lanka, Suriname, Taiwan, Thailand, Trinidad and Tobago, Venezuela and Vietnam, and increasingly in southern China.{{cite web|url=http://www.chinadaily.com.cn/china/2007-09/06/content_6087035.htm|title=Zhuhai reports outbreak of dengue fever|date=2007-09-06|access-date=2009-11-18|publisher=China Daily}}

A 2010 outbreak in Puerto Rico resulted in 5382 confirmed infections and 20 deaths. Nearby Guadeloupe and Martinique, in the French Caribbean, were affected as well: over 40000 clinical cases in each island required medical assistance (the outbreak peaked in August 2010 and was practically over by October).{{cite news|url= http://www.invs.sante.fr/surveillance/dengue/points_guadeloupe/2010/pep_guadeloupe_2010_28_dengue.pdf|title= INVS Bulletin }}{{cite web |url=http://www.invs.sante.fr/surveillance/dengue/points_martinique/2010/pe_martinique_2010_26_dengue.pdf |title=Surveillance de la dengue |website=www.invs.sante.fr |archive-url=https://web.archive.org/web/20101207081016/http://www.invs.sante.fr/surveillance/dengue/points_martinique/2010/pe_martinique_2010_26_dengue.pdf |archive-date=December 7, 2010}} A considerable number of cases were recorded in the French/Dutch island of St.Martin/Sint Maarten as well, where dengue is endemic.{{cite news|url=http://www.invs.sante.fr/surveillance/dengue/points_sbsm/2010/pe_st_martin_2010_21_dengue.pdf |title=Surveillance de la dengue|url-status=dead |archive-url=https://web.archive.org/web/20110108113848/http://www.invs.sante.fr/surveillance/dengue/points_sbsm/2010/pe_st_martin_2010_21_dengue.pdf |archive-date=2011-01-08 }} There was an outbreak in Pakistan with more than 5000 confirmed infections and a mortality rate of 31. The 2009 and 2010 dengue outbreaks in Key West Florida{{cite news| url=https://www.latimes.com/archives/la-xpm-2010-jul-14-la-heb-dengue-outbreak-20100713-story.html | work=Los Angeles Times | first=Thomas H. | last=Maugh II | title=Dengue fever outbreak feared in Key West [Updated] | date=2010-07-14}}{{cite web|url=http://www.healthmap.org/dengue/index.php |title=Global Health, Local Knowledge |publisher=HealthMap |date=2012-10-26 |access-date=2012-11-09}} are similar to the 2005 Texas (25 cases) and 2001 Hawaii (122 cases) outbreaks, which were locally sustained on American soil and not a result of travelers returning from endemic areas.{{cite web |url=http://www.upmc-biosecurity.org/website/resources/publications/2010/2010-09-10-dengue_threat_to_us.html |title=The Dengue Threat to the United States |publisher=Upmc-biosecurity.org |access-date=2012-11-09 |url-status=dead |archive-url=https://web.archive.org/web/20120805211543/http://www.upmc-biosecurity.org/website/resources/publications/2010/2010-09-10-dengue_threat_to_us.html |archive-date=2012-08-05 }}

American visitors to and visitors from dengue-endemic regions will continue to present a potential pathway for the dengue virus to enter the United States and infect populations that have not been exposed to the virus for several decades.{{cite web|url=http://naturalunseenhazards.wordpress.com/2010/05/21/recent-outbreak-of-dengue-cases-are-the-first-locally-acquired-cases-in-florida-since-1934/ |title=CDC reports that recent outbreak of dengue cases are the first locally acquired cases in Florida since 1934. | Natural Unseen Hazards Blog |publisher=Naturalunseenhazards.wordpress.com |date=2010-05-21 |access-date=2012-11-09}} The health risks and rapidly escalating costs to the United States of unmonitored, unvaccinated and disease carrying travelers, legal and illegal, has been recently considered.{{cite web|url=http://www.democraticunderground.com/discuss/duboard.php?az=view_all&address=132x2563804 |title=Another reason to stop illegal immigration: Health risks |publisher=Democratic Underground |date=2000-12-27 |access-date=2012-11-09}}

An outbreak of dengue fever was declared in Cairns, located in the tropical north of Queensland, Australia on 1 December 2008. As of 3 March 2009 there were 503 confirmed cases of dengue fever, in a residential population of 152,137. Outbreaks were subsequently declared the neighbouring cities and towns of Townsville (outbreak declared 5 January 2009), Port Douglas (6 February 2009), Yarrabah (19 February 2009), Injinoo (24 February 2009), Innisfail (27 February 2009) and Rockhampton (10 March 2009). There have been occurrences of dengue types one, two, three, and four in the region. On March 4, 2009, Queensland Health had confirmed an elderly woman had died from dengue fever in Cairns, in the first fatality since the epidemic began last year. The statement said that although the woman had other health problems, she tested positive for dengue and the disease probably contributed to her death.{{citation needed|date=May 2021}}

An epidemic broke out in Bolivia in early 2009, in which 18 people died and 31,000 were infected.

In 2009, in Argentina, a dengue outbreak was declared the northern provinces of Chaco, Catamarca, Salta, Jujuy, and Corrientes, with over 9673 cases reported as of April 11, 2009 by the Health Ministry.{{cite web |url=http://www.msal.gov.ar/htm/Site/sala_situacion/index.asp |title= Sala Virtual de Situación - Ministerio de Salud de la Nación|website=www.msal.gov.ar |archive-url=https://web.archive.org/web/20101220210035/http://www.msal.gov.ar/htm/Site/sala_situacion/index.asp |archive-date=December 20, 2010}} Some travelers from the affected zones have spread the fever as far south as Buenos Aires.{{cite web|url=http://www.lanacion.com.ar/nota.asp?nota_id=1117118 |title=Refuerzan las medidas para frenar el brote de dengue - 10.04.2009 - lanacion.com |publisher=Lanacion.com.ar |date= 2009-04-10|access-date=2012-11-09}} Major efforts to control the epidemic in Argentina are focused on preventing its vector (the Aedes mosquitoes) from reproducing. This is addressed by asking people to dry out all possible water reservoirs from where mosquitoes could proliferate (which is, in other countries, known as "descacharrado"). There were information campaigns concerning prevention of the dengue fever; and the government is fumigating with insecticide in order to control the mosquito population.{{citation needed|date=February 2015}}

One of the South Asian countries still suffering highly from this problem is Sri Lanka.[http://srilankatourismboard.com/news/index.php?option=com_content&view=article&id=45:dengue-outbreak-claims-168-lives&catid=1:latest-news Sri Lanka]

An outbreak caused by serotype DENV-1 occurred in 2002 on Easter Island. Subsequent outbreaks occurred in 2006–2007 and 2008, 2009 and 2011 with decreasing magnitude over time. The male:female ratio in reported cases was approximately 1:1 and the average age at infection was 31.38 ± 18.37 in both sexes.{{cite journal |vauthors=Canals M, González C, Canals A, Figueroa D | year = 2012 | title = Epidemiological dynamics of dengue on Easter Island | journal = Rev Chilena Infectol | volume = 29 | issue = 4| pages = 388–94 | doi = 10.4067/S0716-10182012000400004 | pmid = 23096537 | doi-access = free }}

In many undeveloped regions, "authorities do not have adequate facilities to detect dengue cases."{{cite web|url=http://ibnlive.in.com/generalnewsfeed/news/11-die-due-to-viral-malaria-and-dengue-fever-in-kanpur/336489.html |archive-url=https://web.archive.org/web/20101030230326/http://ibnlive.in.com/generalnewsfeed/news/11-die-due-to-viral-malaria-and-dengue-fever-in-kanpur/336489.html |url-status=dead |archive-date=2010-10-30 |title=11 die due to viral, malaria and dengue fever in Kanpur, IBN Live News |publisher=Ibnlive.in.com |date=2010-09-19 |access-date=2012-11-09}} In the Philippines where patients seek herbal medication in lieu of hospitals for treating dengue, death rates as evidenced, are statistically far greater than other affected areas. Because many cases go unreported, higher statistics do not necessarily indicate a larger outbreak. In 2010, Latin America alone reported 1.5 million cases.{{cite web|url=http://en.mercopress.com/2011/01/17/over-1.5-million-latin-americans-infected-by-dengue-in-2010 |title=Over 1.5 Million Latin Americans Infected by Dengue in 2010 — MercoPress |publisher=En.mercopress.com |date=2011-01-17 |access-date=2012-11-09}}

class="wikitable sortable"
Country !Region !Confirmed Cases (in 2010) !Suspected Cases (in 2010) !Reported Deaths (in 2010) !Compared with previous year !Figures as of**
valign=top |{{noflag}}World (sum of all regions)		1,785,059	N.A.	2,398
valign=top | {{BRA}}	–	1,011,548	–	656	406,269	mid Oct{{cite web|url=http://vaccinenewsdaily.com/news/220671-dengue-fever-deaths-on-the-rise-in-brazil |title=Dengue fever deaths on the rise in Brazil |publisher=Vaccine News Daily |date=2010-11-12 |access-date=2012-11-09}}
valign=top |{{COL}}	–	121,600	–	161	–	Sep 24http://www.elheraldo.com.co/ELHERALDO/BancoConocimiento/0/0van_127600_casos_de_dengue/0van_127600_casos_de_dengue.asp?CodSeccion=25 {{Dead link|date=February 2022}}
valign=top |{{IDN}}	–	–	N/A	N/A	155,000 and 1386 deaths{{cite web|url=http://www.lintasberita.com/Nasional/Berita-Lokal/cme-fk-uii-2010-kaji-virus-dengue |title=cme-fk-uii-2010-kaji-virus-dengue – lintas.me |publisher=Lintasberita.com |date=2010-07-14 |access-date=2012-11-09 |url-status=usurped |archive-url=https://web.archive.org/web/20110719014903/http://www.lintasberita.com/Nasional/Berita-Lokal/cme-fk-uii-2010-kaji-virus-dengue |archive-date=2011-07-19 }}	no date
valign=top |{{PHL}}	–	119,789	–	724	49,319 (up 140%)	Nov 17{{cite web |url=http://www.monstersandcritics.com/news/health/news/article_1599851.php/Death-toll-from-dengue-fever-hits-724-in-the-Philippines |title=Death toll from dengue fever hits 724 in the Philippines |publisher=Monsters and Critics |date=2010-11-18 |access-date=2012-11-09 |url-status=dead |archive-url=https://web.archive.org/web/20110707063320/http://www.monstersandcritics.com/news/health/news/article_1599851.php/Death-toll-from-dengue-fever-hits-724-in-the-Philippines |archive-date=2011-07-07 }}
valign=top |{{VEN}}	–	124,931	–	–	65,869	all of 2010{{cite web|url=http://www.entornointeligente.com/resumen/resumen.php?items=1072882 |title=Gobierno reportó 104 mil 41 casos de dengue en el país |department=Economía |publisher=Entorno Inteligente |date=2012-10-31 |access-date=2012-11-09 |archive-url=https://web.archive.org/web/20110725160936/http://www.entornointeligente.com/resumen/resumen.php?items=1072882 |archive-date=2011-07-25}}
valign=top |{{THA}}	–	108,863	–	131	up 134.7% on sep 27{{cite web|url=http://www.ryt9.com/s/iq01/993388 |title=รมว.สธ.เผยยังพบผู้ป่วยไข้เลือดออกอย่างต่อเนื่อง ภาคใต้อัตราป |publisher=Ryt9.com |date=2010-09-27 |access-date=2012-11-09}}	Nov 20{{cite web|url=http://www.travelhealth.gov.hk/textonly/english/outbreaknews/2010/ond29november2010.html |title=Travel Health Service Year 2010 |publisher=Travelhealth.gov.hk |access-date=2012-11-09}}
valign=top |{{VNM}}	–	~80,000	–	59	105,370 (whole year)	Sep {{cite web |last=Ngoc |first=Truong |url=http://www.saigon-gpdaily.com.vn/Health/2010/9/85697/ |title=SGGP English Edition- Dengue fever continues to spread across Vietnam |publisher=Saigon-gpdaily.com.vn |access-date=2012-11-09 |url-status=dead |archive-url=https://web.archive.org/web/20130704003256/http://www.saigon-gpdaily.com.vn/Health/2010/9/85697/ |archive-date=2013-07-04 }}
valign=top |{{HON}}	–	69,745	–	81	13,351 (whole year)	December 2010{{cite news| url=http://latino.foxnews.com/latino/health/2010/12/18/honduras-tuvo-peor-epidemia-dengue-en-aos/ | work=Fox News | date=18 December 2010 | title=2010: Honduras tuvo peor epidemia de dengue en 30 años}}
valign=top |{{MYS}}	–	45,037	–	133	39,537	dec 17{{Cite web |url=http://www.bernama.com.my/bernama/v5/newsgeneral.php?id=551010 |title=BERNAMA - Increase in Dengue Cases Nationwide This Year with 133 Deaths |access-date=2010-12-19 |archive-url=https://web.archive.org/web/20110622094743/http://www.bernama.com.my/bernama/v5/newsgeneral.php?id=551010 |archive-date=2011-06-22 |url-status=dead }}
valign=top |{{SRI}}	–	26,824	–	192		mid Jul{{cite web|url=http://pacific.scoop.co.nz/2010/09/sri-lanka-dengues-human-cost/|title=Pacific.scoop.co.nz » Sri Lanka: Dengue's Human Cost|work=scoop.co.nz|access-date=20 September 2015}}
valign=top |{{CRI}}	–	21,000	–	N/A	3,326	end Aug{{cite web|url=http://www.insidecostarica.com/dailynews/2010/september/03/costarica10090304.htm|title=Insidecostarica.com – Costa Rica Daily News and Information|work=insidecostarica.com|access-date=20 September 2015}}
valign=top |{{LAO}}	–	14,659	–	39	7,214(whole year)	aug 28{{cite web|url=http://www.asianewsnet.net/news.php?id=14480&sec=22|title=- ANN|access-date=20 September 2015|archive-url=https://web.archive.org/web/20110615154630/http://www.asianewsnet.net/news.php?id=14480&sec=22|archive-date=2011-06-15 |url-status=usurped}}
valign=top |{{PUR}}	–	13,990	–	22	–	Sep 18{{cite web|url=http://www.elnuevodia.com/dengueentrelapreocupacionyladejadez-782462.html|title=Dengue: entre la preocupación y la dejadez|work=El Nuevo Dia|access-date=20 September 2015|date=2010-09-19|archive-date=2012-09-18|archive-url=https://web.archive.org/web/20120918112244/http://www.elnuevodia.com/dengueentrelapreocupacionyladejadez-782462.html|url-status=dead}}
valign=top | {{PAR}}	–	13,678	6138	n/a	n/a	sep 30{{Cite web | url=http://www.diariovanguardia.com.py/index.php?option=com_content&view=article&id=2562:existe-corte-de-circulacion-viral-en-el-66-de-regiones-sanitarias&catid=56:salud&Itemid=413 | title=Diario Vanguardia | Clasificados | Agrupados | Gastronomia | Turismo | Hotelerias | access-date=2010-12-19 | archive-url=https://web.archive.org/web/20120316085357/http://www.diariovanguardia.com.py/index.php?option=com_content&view=article&id=2562:existe-corte-de-circulacion-viral-en-el-66-de-regiones-sanitarias&catid=56:salud&Itemid=413 | archive-date=2012-03-16 | url-status=dead }}
valign=top | {{MEX}}	–	12,240	–	20	15,032	week 32 (sep){{Cite web |url=http://www.dgepi.salud.gob.mx/denguepano/dengue-2010.html |title=Panorama Semanal Epidemiológico DENGUE 2009 |access-date=2010-12-19 |archive-url=https://web.archive.org/web/20101209014757/http://www.dgepi.salud.gob.mx/denguepano/dengue-2010.html |archive-date=2010-12-09 |url-status=dead }}
valign=top |{{IDN}}	Bali	10,230	–	29	N/A	Jan–Oct{{cite web|url=http://www.travelhealth.gov.hk/english/outbreaknews/2010/ond22november2010.html|title=Travel Health Service Year 2010|date=20 September 2015|work=travelhealth.gov.hk|access-date=20 September 2015}}
valign=top |{{DOM}}	–	8,839	–	41	3,000	Sep 3{{cite web|url=http://www.promedmail.org/pls/otn/f?p=2400:1001:2447503484227822::NO::F2400_P1001_BACK_PAGE,F2400_P1001_PUB_MAIL_ID:1000,84660|title=ProMED-mail|work=promedmail.org|access-date=20 September 2015|archive-date=25 September 2010|archive-url=https://web.archive.org/web/20100925050746/http://www.promedmail.org/pls/otn/f?p=2400:1001:2447503484227822::NO::F2400_P1001_BACK_PAGE,F2400_P1001_PUB_MAIL_ID:1000,84660|url-status=dead}}
valign=top |{{ELS}}	–	6,458	15,068	1	n/a	week 28http://migenteinforma.org/el-dengue-prolifera-en-las-fronteras-de-guatemala-honduras-y-el-salvador{{Dead link|date=July 2019 |bot=InternetArchiveBot |fix-attempted=yes }}
valign=top |{{IND}}	Delhi	5,837	–	8	1,153	Nov 9 {{cite news|url=http://timesofindia.indiatimes.com/city/delhi/35-new-dengue-cases-in-Delhi/articleshow/6895712.cms |work=The Times Of India |title=35 new dengue cases in Delhi |url-status=dead |archive-url=https://web.archive.org/web/20101113231839/http://timesofindia.indiatimes.com/city/delhi/35-new-dengue-cases-in-Delhi/articleshow/6895712.cms |archive-date=November 13, 2010 }}
valign=top |{{PAK}}	–	7,000+	–	35	–	Nov 22{{Cite web|url=https://dailytimes.com.pk/|archive-url=https://web.archive.org/web/20100714043105/http://www.dailytimes.com.pk/default.asp?page=2010|url-status=dead|title=Daily Times - Latest Pakistan News, World, Business, Sports, Lifestyle|archive-date=July 14, 2010|website=Daily Times}}
valign=top |{{IDN}}	North Sumatra	5,805	–	N/A	4,643 (whole year)	Sep {{cite web|url=http://www.waspada.co.id/index.php?option=com_content&view=article&id=158174:penderita-dbd-di-sumut-capai-5805-orang&catid=15:sumut&Itemid=28|title=Waspada Online|access-date=20 September 2015}}
valign=top |{{IDN}}	Semarang	5,284	–	43	3,883	Oct 12 {{cite web|url=http://kesehatan.liputan6.com/berita/201012/310802/Penderita.DBD.di.Semarang.Meningkat|title=Penderita DBD di Semarang Meningkat|work=liputan6.com|access-date=20 September 2015|date=2010-12-10}}
valign=top |{{SIN}}	–	5,103	–	41	4,497	dec 11{{Cite web |url=http://www.straitstimes.com/BreakingNews/Singapore/Story/STIStory_614132.html |title=Dengue cases up in S'pore and SE-Asia |access-date=2010-12-19 |archive-date=2010-12-18 |archive-url=https://web.archive.org/web/20101218145942/http://www.straitstimes.com/BreakingNews/Singapore/Story/STIStory_614132.html |url-status=dead }}
valign=top |{{CAM}}	–	3,771	–	10	2,355	to July{{cite web|url=http://www.phnompenhpost.com/index.php/2011020446596/National-news/dengue-fever-authorities-to-distribute-insecticide.html|title=Dengue fever: Authorities to distribute insecticide |work=Phnom Penh Post |date=4 February 2011 |access-date=20 September 2015 |archive-url=https://web.archive.org/web/20110205225111/http://www.phnompenhpost.com/index.php/2011020446596/National-news/dengue-fever-authorities-to-distribute-insecticide.html | archive-date=5 February 2011}}
valign=top |{{SAU}}	Jeddah	2219	–	N/A		dec 16{{cite web|url=http://www.saudigazette.com.sa/index.cfm?method=home.regcon&contentID=2010121789449 |title=2,219 cases of dengue fever in Jeddah |author=Saudi Gazette |work=saudigazette.com.sa |access-date=20 September 2015 |url-status=dead |archive-url=https://web.archive.org/web/20120330190750/http://www.saudigazette.com.sa/index.cfm?method=home.regcon&contentID=2010121789449 |archive-date=30 March 2012 }}
valign=top |{{FRA}}	Martinique	644	41970	17		Nov 22
valign=top |{{FRA}}	Guadeloupe	418	44000	5		Nov 22 {{Cite web|url=http://www.invs.sante.fr/surveillance/dengue/points_guadeloupe/2010/pep_guadeloupe_2010_28_dengue.pdf|title = Géodes - Santé publique France}}
valign=top |{{GUA}}	–	1,925	11,800	25		1 sep{{cite web|url=http://spanish.peopledaily.com.cn/31614/7133542.html|title=Gobierno de Guatemala reporta 25 muertos por dengue|work=peopledaily.com.cn|access-date=20 September 2015|archive-date=10 September 2010|archive-url=https://web.archive.org/web/20100910092808/http://spanish.peopledaily.com.cn/31614/7133542.html|url-status=dead}}
valign=top |{{IDN}}	Yogyakarta	1123	–	–	688 (whole year)	Sep 26{{cite web|url=http://www.republika.co.id/berita/breaking-news/kesehatan/10/09/21/135726-hujan-terus-kasus-dbd-di-yogya-naik-40-persen|title=Hujan Terus, Kasus DBD di Yogya Naik 40 Persen|work=Republika Online|access-date=20 September 2015|date=2010-09-21}}
valign=top |{{flag|Republic of China|name=Taiwan|Republic of China}}	–	1211	–	2	1052	Nov 1{{cite web|url=http://nidss.cdc.gov.tw/SingleDisease.aspx?Pt=s&dc=1&dt=2&disease=061|title=傳染病統計資料查詢系統|work=cdc.gov.tw|access-date=20 September 2015}}
valign=top |{{TRI}}	–	1,200	–	4	N/A	end aug{{cite web|url=http://www.etaiwannews.com/etn/news_content.php?id=1365772&lang=eng_news|title=Caribbean dengue deaths force new measures in PR – Taiwan News Online|work=etaiwannews.com|date=4 September 2010|access-date=20 September 2015|archive-date=20 September 2011|archive-url=https://web.archive.org/web/20110920055954/http://www.etaiwannews.com/etn/news_content.php?id=1365772&lang=eng_news|url-status=dead}}
valign=top |{{IND}}	Uttar Pradesh	496	–	8		Oct 20{{Cite web | url=http://www.expressindia.com/latest-news/mystery-fever-health-officials-differ-on-toll/700438/ | title=Mystery fever: Health Officials differ on toll – Indian Express | access-date=2010-12-19 | archive-url=https://web.archive.org/web/20121011031004/http://www.expressindia.com/latest-news/mystery-fever-health-officials-differ-on-toll/700438/ | archive-date=2012-10-11 | url-status=dead }}
valign=top |{{NEP}}	Chitwan	280	–	–	–	Oct 17, 2010{{cite web|url=http://www.thehimalayantimes.com/fullNews.php?headline=Lawmakers+continue+surveying+dengue-hit+areas+&NewsID=261673|title=Lawmakers continue surveying dengue-hit areas |work=The Himalayan Times |date=2010-10-13 |access-date=20 September 2015|archive-date=5 July 2011|archive-url=https://web.archive.org/web/20110705201015/http://thehimalayantimes.com/fullNews.php?headline=Lawmakers+continue+surveying+dengue-hit+areas+&NewsID=261673|url-status=dead}}
valign=top | {{USA}}	–	198 (24-2010FL, 27-2009FL, 25-2005TX, 122-2001HI){{Cite web|url=http://www.abola.pt/mundos/ver.aspx?id=215785|archive-url=https://web.archive.org/web/20100725023408/http://www.abola.pt/mundos/ver.aspx?id=215785|archive-date=2010-07-25|date=2010-07-24|title=Dengue é diagnosticado na Florida após 75 anos|language=pt|website=Abola.pt}}		2 (2010, suspected){{cite web|url=http://virginislandsdailynews.com/news/dengue-fever-possible-cause-of-death-of-st-john-woman-1.977556?localLinksEnabled=false |archive-url=https://web.archive.org/web/20110720105544/http://virginislandsdailynews.com/news/dengue-fever-possible-cause-of-death-of-st-john-woman-1.977556?localLinksEnabled=false |url-status=dead |archive-date=20 July 2011 |title=Dengue fever possible cause of death of St. John woman |first=Joy |last=Blackburn |work=VirginIslandsDailyNews.com |access-date=20 September 2015 }}{{cite web |url=http://www.nzherald.co.nz/sport/news/article.cfm?c_id=4&objectid=10685031 |title=Surfing: Irons leaves behind pregnant wife |date=3 November 2010 |work=The New Zealand Herald |access-date=27 September 2011}}	Cases down 11% from 2009	Aug 3, 2010 {{cite news| url=http://www.cnn.com/2010/HEALTH/08/03/dengue.virus.florida/ | work=CNN | title=Florida confirms 24 cases of dengue fever in Key West | date=2010-08-04}}
valign=top |{{FRA}}	Mayotte	75	–	N/A		Sep 1
valign=top |{{AUS}}	Queensland	13	0	1		Nov 3, 2010{{cite news|url=http://www.abc.net.au/news/stories/2010/10/15/3039601.htm|archive-url=https://web.archive.org/web/20101107215452/http://www.abc.net.au/news/stories/2010/10/15/3039601.htm|url-status=dead|archive-date=November 7, 2010|title=More dengue fever cases uncovered in north Qld|work=ABC News|access-date=20 September 2015|date=2010-10-15|last1=Lyons|first1=Niki}}

{{see also|2011 dengue outbreak in Pakistan}}

Philippines dengue case load for Q1 2011 was some 5% higher than the preceding year, at 18,885 cases and 115 deaths.{{Cite web | url=http://newsinfo.inquirer.net/breakingnews/nation/view/20110507-335089/Dengue-wont-go-away | title=Philippines Top Stories: Politics, Environment, Education, Trending | Inquirer.net | access-date=2011-05-15 | archive-url=https://web.archive.org/web/20110513022518/http://newsinfo.inquirer.net/breakingnews/nation/view/20110507-335089/Dengue-wont-go-away | archive-date=2011-05-13 | url-status=dead }} For 2011 until April 16, Brazil has recorded some 56,882 cases with 39 deaths, Paraguay with 27,000 cases and 31 deaths.{{cite web|url=http://www.etravelblackboard.com/article/117971/world-travel-health-alerts-april-27-2011|title=Etravelblackboard.com|access-date=20 September 2015}}

A notable case was that of Trinidad and Tobago's first female Prime Minister, Kamla Persad-Bissessar, who was diagnosed with dengue fever in August 2011,{{cite web|url=http://www.trinidadexpress.com/news/DENGUE_STRIKES_KAMLA-127916578.html|title=Trinidad Express Newspapers: – DENGUE STRIKES KAMLA|work=trinidadexpress.com|access-date=20 September 2015|archive-url=https://web.archive.org/web/20131020115619/http://www.trinidadexpress.com/news/DENGUE_STRIKES_KAMLA-127916578.html|archive-date=20 October 2013|url-status=dead}} prompting investigation into the possibility of an epidemic on the twin-island republic.

In 2012 the Island of Madeira experienced its first outbreak of dengue with 1080 confirmed cases.{{Cite journal|last1=Auerswald|first1=Heidi|last2=de Jesus|first2=Ana|last3=Seixas|first3=Gonçalo|last4=Nazareth|first4=Teresa|last5=In|first5=Saraden|last6=Mao|first6=Sokthearom|last7=Duong|first7=Veasna|last8=Silva|first8=Ana Clara|last9=Paul|first9=Richard|date=2019-03-13|title=First dengue virus seroprevalence study on Madeira Island after the 2012 outbreak indicates unreported dengue circulation|journal=Parasites & Vectors|volume=12|issue=1|pages=103|doi=10.1186/s13071-019-3357-3|issn=1756-3305|pmc=6417143|pmid=30867031 |doi-access=free }}

Some 52,008 cases of dengue fever were recorded in Thailand from Jan to Oct 16, 2012, with 50 deaths.{{Cite web | url=http://www.bangkokpost.com/news/health/318112/warning-against-dengue-fever |title = Warning of dengue fever outbreak}}

{{see also|2013 dengue outbreak in Singapore}}

Record dengue outbreaks reported in 2013 in many countries: Brazil (double deaths over 2012),{{cite web|url=http://en.mercopress.com/2013/11/21/dengue-emergency-in-brazil-573-deaths-so-far-this-year-says-health-ministry|title=Dengue emergency in Brazil: 573 deaths so far this year says Health ministry|work=MercoPress|access-date=20 September 2015}} Singapore, and Thailand (worst in 20 years),{{Cite web | url=http://www.bangkokpost.com/news/local/375679/worst-dengue-epidemic-in-20-years | title=Worst dengue epidemic in 20 years}} among others. San Pedro Sula, Honduras declared a dengue 'state of emergency',{{cite web|url=http://www.msf.org/article/honduras-msf-fights-deadly-outbreak-dengue-fever|title=Honduras: MSF fights deadly outbreak of dengue fever|work=Médecins Sans Frontières (MSF) International|access-date=20 September 2015}} and Central America had its worst outbreaks since 2008.{{cite web|url=http://www.argentinaindependent.com/currentaffairs/central-america-dengue-epidemic-sweeps-region/|title=Central America: Dengue Epidemic Sweeps Region|work=The Argentina Independent|access-date=20 September 2015}} Polynesia experienced an 'unprecedented' series of outbreaks (14), along with Chikungunya and Zika virus.{{citation needed|date=May 2021}}

In only 7 weeks, in Brazil some 205,000 cases of dengue were reported, a record.{{cite web|url=http://vaccinenewsdaily.com/medical_countermeasures/322653-brazil-hit-by-dengue-outbreak/|title=Brazil hit by dengue outbreak|author=Vaccine News Report|date=27 February 2013|work=vaccinenewsdaily.com|access-date=20 September 2015}} In Peru, nearly 400 cases have been reported until March 2013; two of them were fatal.[http://www.healio.com/infectious-disease/emerging-diseases/news/print/infectious-disease-news/%7B64a7ad47-d2aa-4bab-bb87-320538f3a32f%7D/paraguay-declares-state-of-emergency-due-to-dengue-fever "Paraguay declares state of emergency due to dengue fever"], Healio Since the beginning of 2013, in Paraguay 35 people have died after contracting dengue fever and almost 70,000 are still infected.[http://www.argentinaindependent.com/currentaffairs/newsfromlatinamerica/paraguay-dengue-fever-epidemic-worsens/ "Paraguay: Dengue Fever Epidemic Worsens"] {{Webarchive|url=https://web.archive.org/web/20130614015137/http://www.argentinaindependent.com/currentaffairs/newsfromlatinamerica/paraguay-dengue-fever-epidemic-worsens/ |date=2013-06-14 }}, The Argentina Independent As of June, 150,000 people in Thailand have come down with it, with 50 deaths, and some 44 deaths in Laos and 11,000 cases, 14,000 cases in Singapore but only 6 deaths, 22 deaths in Malaysia and 10,500 cases{{cite web|url=http://www.trust.org/item/20130625114148-6jwhn/|title=Dengue fever cases hit a high in parts of Southeast Asia -media|agency=Thomson Reuters Foundation|work=trust.org|access-date=20 September 2015}} while 42,500 cases in Philippines with about 200 deaths.{{cite web|url=http://www.gmanetwork.com/news/story/312978/news/nation/doh-42-207-dengue-cases-193-deaths-from-january-to-1st-week-of-june|title=DOH: 42,207 dengue cases, 193 deaths from January to 1st week of June|work=GMA News Online|date=15 June 2013 |access-date=20 September 2015}}

Dengue deaths have tripled in Malaysia until Feb 2014 over 2013, after tripling 2013 over 2012.{{cite news|url=http://www.abc.net.au/news/2014-02-12/an-malaysia-warns-of-spike-in-dengue-fever-cases/5254086|title=Malaysia warns of dengue fever spike|work=ABC News|date=11 February 2014|access-date=20 September 2015}}

Due to Typhoon Haiyan striking the Philippines early 2014, stagnant waters and heavy rain have been on constant watch due to mosquitoes breeding and causing epidemics around the area.{{cite web|title=Philippines On Watch For Infectious Disease Outbreaks|url=http://www.irinnews.org/report/99556/philippines-on-watch-for-infectious-disease-outbreaks|access-date=21 April 2014|date=2014-01-29}}

Yoyogi Park in Tokyo became a breeding ground for dengue fever carrying mosquitoes. On September 2, the Japanese health ministry confirmed that 34 people had been infected.{{cite web|title=Japanese models catch Dengue fever after visiting source of outbreak|website=TheGuardian.com|date=2 September 2014|url=https://www.theguardian.com/world/2014/sep/02/dengue-fever-japan-celebrities-outbreak|access-date=2 September 2014}}

A study claims India has 6 million unreported dengue cases annually,http://www.abplive.in/health/2014/10/07/article415679.ece/India-has-6-mn-unreported-dengue-cases-study#.VDTzMLRX_9k10/07/article415679.ece/India-has-6-mn-unreported-dengue-cases-study#.VDTzMLRX_9k {{Webarchive|url=https://web.archive.org/web/20170415015451/http://www.abplive.in/health/2014/10/07/article415679.ece/India-has-6-mn-unreported-dengue-cases-study#.VDTzMLRX_9k10/07/article415679.ece/India-has-6-mn-unreported-dengue-cases-study |date=2017-04-15 }} while in Guangdong, China, a 15-fold increase over last year and 5-fold increase of mosquitos has left the normally lightly hit region stunned.{{cite web|url=http://www.ecns.cn/2014/10-08/137273.shtml|title=South China province reports 1,661 new dengue fever cases|work=ecns.cn|access-date=20 September 2015}} Likewise Taiwan also had a 10-fold increase in cases this year.{{cite web|url=http://outbreaknewstoday.com/south-china-dengue-outbreak-tops-16000-taiwan-sees-10-times-the-2013-case-total-98050/|title=South China dengue outbreak tops 16,000, Taiwan sees 10-times the 2013 case total – Outbreak News Today|work=outbreaknewstoday.com|access-date=20 September 2015|date=2014-10-03}}

{{see also|2015 dengue outbreak in Taiwan}}

2015 saw a dengue outbreak in Taiwan.{{citation needed|date=June 2021}}

Outbreaks intensified in nearly all tropical areas, with endemic extent, deaths, and caseloads all reported at new highs, with the Americas reporting 2 million symptomatic cases.{{Cite web | url=http://outbreaknewstoday.com/dengue-in-the-americas-2-million-cases-and-counting-deaths-top-1000/ |title = Dengue in the Americas: 2 million cases and counting, deaths top 1,000| work=Outbreak News Today |date = 2015-11-08 | last1=Herriman | first1=Robert }} In tropical/subtropical Asia, nearly all nations had reported explosive increases.{{Cite web | url=http://outbreaknewstoday.com/dengue-in-asia-updated-case-counts-for-thailand-the-philippines-taiwan-malaysia-and-others-79486/ | title=Dengue in Asia: Updated case counts for Thailand, the Philippines, Taiwan, Malaysia and others| work=Outbreak News Today| date=2015-11-18| last1=Herriman| first1=Robert}}{{cite web |url=http://news.xinhuanet.com/english/2015-10/28/c_134756955.htm |title=Vietnam's dengue fever deaths surge 76.5 PCT in 10 months - Xinhua | English.news.cn |website=news.xinhuanet.com |access-date=9 August 2022 |archive-url=https://web.archive.org/web/20151029153240/http://news.xinhuanet.com/english/2015-10/28/c_134756955.htm |archive-date=29 October 2015 |url-status=dead}}{{Cite web | url=http://focustaiwan.tw/news/asoc/201511260010.aspx |title = Dengue fever cases exceed 38,000, concentrated in southern Taiwan | Society | FOCUS TAIWAN – CNA ENGLISH NEWS| date=26 November 2015 }} With one sole exception, China's caseload has plunged to less than a tenth of the prior year due to massive releases of sterilized mosquitos.{{citation needed|date=May 2021}}

Dengue appeared in the Hawaiian Islands in late 2015, with at least 190 cases confirmed by year end. Most cases were reported on the island of Hawaii (the "Big Island").{{Cite web|title = Seven new confirmed Dengue Fever cases bring total to 202 Friday (Jan 1)|url = http://www.hawaii247.com/2016/01/01/seven-new-confirmed-dengue-fever-cases-bring-total-to-202-friday-jan-1/|website = Hawaii 24/7|date = 2 January 2016|access-date = 2016-01-04}}{{Cite web|title = Disease Outbreak Control Division {{!}} Dengue Outbreak 2015|url = http://health.hawaii.gov/docd/dengue-outbreak-2015/|website = health.hawaii.gov|access-date = 2016-01-04}}

Argentina registered a Dengue fever outbreak in late January 2016 with 13 of 24 provinces affected.{{cite web|title="Ya tenemos un brote epidémico de dengue", aseguró Jorge Lemus|url=http://www.lanacion.com.ar/1863840-ya-tenemos-un-brote-epidemico-de-dengue-aseguro-jorge-lemus|website=La Nacion|access-date=21 January 2016|date=2016-01-20}}{{cite news|last1=Czubaj|first1=Fabiola|title=Con más de 1100 casos, el dengue ya se convirtió en una epidemia|url=http://www.lanacion.com.ar/1863972-con-mas-de-1100-casos-el-dengue-ya-se-convirtio-en-una-epidemia|website=La Nacion|publisher=La Nacion|access-date=21 January 2016|date=2016-01-21}}{{cite web|title=El mapa del dengue: cómo está la situación provincia por provincia|url=http://www.lanacion.com.ar/1864000-el-mapa-del-dengue-como-esta-la-situacion-provincia-por-provincia|website=La Nacion|access-date=21 January 2016|date=2016-01-21}}

In Thailand, officials anticipated as many cases in 2016 as occurred during a large outbreak in 1978, the largest ever recorded.{{cite news|title=Thailand braces for 'mega-outbreak' of Dengue fever|url=http://www.channelnewsasia.com/news/asiapacific/thailand-braces-for-mega/2465766.html|access-date=4 March 2016|publisher=Channel NewsAsia}} From the beginning of the year to March, more than 8,000 cases had occurred,{{cite web|title=PRO/AH> DENGUE/DHF UPDATE (06): AMERICAS, ASIA, INDIAN OCEAN, AFRICA 2016-03-03 10:36:0 Archive Number: 20160303.4065700 |url=http://promedmail.org/direct.php?id=20160303.4065700|website=Pro-MED-mail|publisher=International Society for Infectious Diseases}} compared with just over 4,000 cases over the same period in 2015.{{cite news|title=Dengue fever numbers double from last year|url=http://www.nationmultimedia.com/national/Dengue-fever-numbers-double-from-last-year-30280477.html|archive-url=https://web.archive.org/web/20160301093522/http://www.nationmultimedia.com/national/Dengue-fever-numbers-double-from-last-year-30280477.html|url-status=dead|archive-date=March 1, 2016|access-date=4 March 2016|publisher=The Nation}}

{{see also|2017 dengue outbreak in Sri Lanka}}

A Dengue fever outbreak in the Indian state of Kerala in May and June 2017 had caused 6808 confirmed infections and 13 deaths by June 16.{{cite news|title=Dengue fever cases swell in Kerala|url=http://www.thehindu.com/news/cities/Thiruvananthapuram/dengue-fever-cases-swell-in-kerala/article19089841.ece|access-date=25 July 2017|work=The Hindu|date=16 June 2016}}

In Sri Lanka, there were 180,000 reported cases in 2017.{{Cite journal |last1=Rathnayake |first1=D. |last2=Wijewickrama |first2=A. |last3=Aluthge |first3=K. |date=September 30, 2018 |title=Response of the National Institute of Infectious Diseases, Sri Lanka to an unexpected dengue epidemic in 2017|journal=The Ceylon Medical Journal |volume=63 |issue=3 |pages=108–112 |doi=10.4038/cmj.v63i3.8727|issn=0009-0875|pmid=30415513|doi-access=free }} The majority of cases being reported from the Western province. The highest numbers of dengue cases were reported during the 20 week of 2017.{{Cite web|url=http://www.epid.gov.lk/web/index.php?option=com_content&view=article&id=171:dengue-update&catid=51:message-for-public&Itemid=487&lang=en|title=Dengue update|last=Administrator|website=www.epid.gov.lk|access-date=2017-06-20}} Sri Lankan health authorities warned that the country was facing a dengue epidemic with at least 301 patients dead.{{Cite news|url=http://www.firstpost.com/world/sri-lanka-warns-of-dengue-epidemic-200-dead-over-63000-affected-in-2017-3722803.html|title=Sri Lanka warns of dengue epidemic; 200 dead, over 63,000 affected in 2017|date=2017-06-20|work=Firstpost|access-date=2017-06-20}}

{{See also |2019 dengue fever epidemic|2019 dengue outbreak in Bangladesh}}

A dengue fever outbreak in Bangladesh starting in April 2019 has caused 18,484 infected patients and 57 deaths.{{cite web | url=https://bmrcbd.org/Bulletin/bulletin_html/4502_Editorial.html | title=Dengue: Bangladesh Context }}

A dengue epidemic has been declared in the Philippines after 600 dead and over 150,000 cases reported.{{Citation | title = Dengue epidemic declared in the Philippines: 600 dead, 150 thousand cases | publisher = ABC | url = https://abcnews.go.com/International/dengue-epidemic-declared-philippines-600-dead-150000-cases/}}

In the summer of 2019 an outbreak was confirmed in Oceania. 276 cases and one death were reported in the Marshall Islands, resulting in the government halting travel between the urban centers of Ebeye and Majuro to the outer islands.{{cite web|title=Marshalls confirms first dengue death|url= https://www.rnz.co.nz/international/pacific-news/398139/marshalls-confirms-first-dengue-death|first=Giff|last=Johnson |date=4 September 2019 |access-date= 4 September 2019|publisher= Radio New Zealand}} Outbreaks were also reported in Palau, Federated States of Micronesia, the Cook Islands, Tuvalu, and the Philippines.{{cite web |title= WHO says 2019 'worse than usual' for dengue in Pacific|url= https://www.rnz.co.nz/international/pacific-news/397502/who-says-2019-worse-than-usual-for-dengue-in-pacific |date= 26 August 2019 |access-date= 4 September 2019 |publisher= Radio New Zealand}}

In end of December 2018, a man who had no recent travel history{{Citation | work = Ijid online | url = https://www.ijidonline.com/article/S1201-9712(19)30410-2/fulltext | title = Source of Oman's Dengue Outbreak| date = 2020 | pmid = 31639520 | last1 = Al-Abri | first1 = S. S. | last2 = Kurup | first2 = P. J. | last3 = Al Manji | first3 = A. | last4 = Al Kindi | first4 = H. | last5 = Al Wahaibi | first5 = A. | last6 = Al Jardani | first6 = A. | last7 = Mahmoud | first7 = O. A. | last8 = Al Balushi | first8 = L. | last9 = Al Rawahi | first9 = B. | last10 = Al Fahdi | first10 = F. | last11 = Al Siyabi | first11 = H. | last12 = Al Balushi | first12 = Z. | last13 = Al Mahrooqi | first13 = S. | last14 = Al Manji | first14 = A. | last15 = Al Sharji | first15 = A. | last16 = Al Harthi | first16 = K. | last17 = Al Abri | first17 = B. | last18 = Al-Raidan | first18 = A. | last19 = Al Bahri | first19 = Z. | last20 = Al-Mukhaini | first20 = S. | last21 = Amin | first21 = M. | last22 = Prasanna | first22 = A. R. | last23 = Petersen | first23 = E. | last24 = Al Ajmi | first24 = F. | volume = 90 | pages = 97–103 | doi = 10.1016/j.ijid.2019.10.017 | doi-access = free }}. tested positive for dengue fever in Oman. It is thought the Aedes Aegypti mosquito, which had been reportedly seen in some parts of Muscat, is the cause of the outbreak of dengue fever in parts of Oman. The outbreak was easily controlled though, with only 343 suspected cases and 59 confirmed cases by April 2019.{{citation needed|date=June 2021}}

Mexico reported 41,505 cases and 191 deaths, with Jalisco being the state with the most infections (11,727) and deaths (49).

{{see also|2020 dengue outbreak in Singapore}}

1,346,991 cases of dengue fever were reported in Latin America between January 2019 and March 2020; 1,530 people died. The countries with the highest rates were Nicaragua (2,271 cases per 100,000 inhabitants), Belize (1,021), Honduras (995.5), and El Salvador (375). Bolivia reported 7,700 cases.{{citation needed|date=July 2020}} Mexico had 24,313 cases and 79 deaths; the state of Jalisco reported the highest numbers (5,362 cases and 20 deaths), followed by Tabasco (9 deaths), and Michoacán (2,517 cases).{{cite news |last1=Partida |first1=Juan Carlos G. |title=La Jornada - Jalisco, primer lugar nacional en dengue por segundo año consecutivo |url=https://www.jornada.com.mx/notas/2021/01/11/estados/jalisco-primer-lugar-nacional-en-dengue-por-segundo-ano-consecutivo/ |access-date=January 11, 2021 |work=jornada.com.mx |publisher=La Jornada |language=es}}

Health authorities warned that efforts to combat the COVID-19 pandemic hampered efforts to combat dengue. At least 1.1 million cases of dengue and nearly 400 deaths from the disease were reported in Brazil, where there were over 3.1 million COVID-19 infections.{{cite web |title=Dengue prevention efforts stifled by coronavirus pandemic, doctors warn |url=https://www.nbcnews.com/news/world/dengue-prevention-efforts-stifled-coronavirus-pandemic-doctors-warn-n1233597 |website=NBC News |date=12 July 2020 |access-date=July 12, 2020 |language=en}}

{{see also|2023 dengue outbreak in Jamaica}}

In September 2023 The Ministry of Health and Wellness of Jamaica declared a dengue outbreak after a significant rise in cases.{{cite web |title=Jamaica declares dengue outbreak |url=https://www.unmc.edu/healthsecurity/transmission/2023/09/26/jamaica-declares-dengue-outbreak/ |website=Global Center for Health Security |access-date=7 March 2023 |date=26 September 2023}} The Guardian reported that the outbreak was influenced by the heat, as the summer of 2023 recorded the highest temperature in 100,000 years.{{cite web |author1=oldGeorgiana Gordon-Strachan |title=Jamaica's dengue fever outbreak shows the deadly effects of record heat |url=https://www.theguardian.com/global-development/2023/nov/15/jamaicas-dengue-fever-outbreak-shows-the-deadly-effects-of-record-heat |website=The Guardian |access-date=7 March 2023}}

{{see also|2024 dengue outbreak in Latin America and the Caribbean|2024 dengue epidemic in Argentina}}

Brazil is facing a significant outbreak of dengue fever, with public health experts indicating that this surge is a precursor to an increase in cases across the Americas, including Puerto Rico. Brazil's Health Ministry anticipates over 4.2 million cases this year, surpassing the 4.1 million cases reported by the Pan American Health Organization for all 42 countries in the region last year. While Brazil typically experiences fluctuations in dengue cases on a four-year cycle, experts attribute the intensified problem this year to factors such as El Niño and climate change.{{Cite web |date=2024-02-11 |title=Brazil Has a Dengue Emergency, Portending a Health Crisis for the Americas |url=https://news.yahoo.com/brazil-dengue-emergency-portending-health-151423226.html |access-date=2024-02-12 |website=Yahoo News |language=en-US}}{{Cite news |last=Nolen |first=Stephanie |date=2024-02-10 |title=Brazil Has a Dengue Emergency, Portending a Health Crisis for the Americas |url=https://www.nytimes.com/2024/02/10/health/dengue-brazil-americas.html |access-date=2024-02-12 |work=The New York Times |language=en-US |issn=0362-4331}}

Argentina is experiencing its worst dengue outbreak in history, with more than 100,000 positive cases in the first three months of the year, eleven times higher than the same period in 2023.{{cite web|url=https://www.pagina12.com.ar/722369-el-peor-brote-de-la-historia-en-argentina|work=Página/12|accessdate=25 March 2024|location=Buenos Aires|language=es|date=20 March 2024|title=Dengue: el peor brote de la historia en Argentina|first=Santiago|last=Brunetto}}{{cite web|url=https://elpais.com/argentina/2024-03-20/argentina-atraviesa-el-peor-brote-de-dengue-de-su-historia.html|language=es|title=Argentina atraviesa el peor brote de dengue de su historia|location=Madrid|accessdate=25 March 2024|date=20 March 2024|first=Constanza|last=Lambertucci|work=El País}} Interviewed by Página/12, infectologist Leda Guzzi explained the outbreak with five main points: the exponential increase in the number of cases is up to 11 times higher than last year; the early timing of the outbreak was anticipated by at least four weeks; in 2023 the winter continued with viral transmission; there was co-circulation of three serotypes; and there have already been several epidemics in the last decade, which leads to an accumulation of people who have already had an episode of dengue fever. The new government of Javier Milei, who took office as president in December 2023, refused to carry out awareness campaigns or guarantee access to free vaccination against the disease (unlike Brazil), due to its intransigent policy of drastically reducing public spending. When asked about this, presidential spokesperson Manuel Adorni argued that "the effectiveness [of the vaccine] has not been proven", although it was approved in Argentina in April 2023. In general terms, the government's official position has been to ignore the epidemic and its health minister Mario Russo made almost no reference to the situation, centralizing communication with Adorni. As of March 20, 69 deaths from the disease had been recorded so far in 2024. Eventually, the severity of the epidemic led the government to launch its first advertising spot providing basic prevention information on March 21.{{cite web|url=https://www.pagina12.com.ar/724031-brote-record-de-dengue-mas-de-151-mil-casos-en-medio-de-la-i|language=es|accessdate=25 March 2024|location=Buenos Aires|work=Página/12|date=25 March 2024|title=Brote record de dengue: más de 151 mil casos en medio de la inacción del Gobierno}} For his part, Russo, who had had no public presence in his first 13 weeks, met on March 25 with the health ministers of all the provinces at the first meeting of the Federal Health Council (Consejo Federal de Salud; COFESA).

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Category:18th-century epidemics

Category:20th-century disease outbreaks

Category:21st-century epidemics

Category:Dengue fever