Polaribacter irgensii

{{Short description|Species of bacterium}}

{{Italic title}}

{{Taxobox

| name = Polaribacter irgensii

| domain = Bacteria

| phylum = Bacteroidota

| classis = Flavobacteriia

| ordo = Flavobacteriales

| familia = Flavobacteriaceae

| genus = Polaribacter

| binomial = P. irgensii

| binomial_authority = Gosink et al. 1998

}}

Polaribacter irgensii is a species of gas vacuolate polar marine bacteria.{{cite journal|vauthors=Vanderpas J, Bontems P, Miendje Deyi VY, Cadranel S | title=Follow-up of Helicobacter pylori infection in children over two decades (1988-2007): persistence, relapse and acquisition rates. | journal=Epidemiol Infect | year= 2013 | volume= 142| issue=4 | pages= 1–9 | pmid=23809783 | doi=10.1017/S0950268813001428 | pmc=9151151 | doi-access=free }} It was first isolated from sea ice and water from the Arctic and the Antarctic. Its type strain is ATCC 700398.