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Other than H5N1 and H7N9, H5N6 is another highly pathogenic influenza A virus that can be transmitted from birds to human. Currently all known human H5N6 infections globally have been reported in China alone. Prior to the end of February 2017, the virus has been discovered in birds in Asia exclusively. In November 2016, H5N6 outbreak was observed among poultries of South Korea. The most severe series occurred in Chungcheongbuk-do, with 16 outbreaks identified in a single month. Millions of livestock have been culled to prevent any transmission to human. On 3 March 2017, Greece reported H5N6 outbreak in poultry. It was also the first country outside Asia reporting H5N6 outbreaks. It is not known if the H5N6 in Greece has come from the same Asian source or is the result of another round of genetic reassortment. Further research is needed before a conclusion can be reached.

The map shows, up to 12 February 2017, the accumulated number of outbreaks by administrative regions among birds in Asian countries, and the distribution of human H5N6 cases reported by province in China. Apart from South Korea and China, the virus was also identified in poultries and birds of Japan, Taiwan, Vietnam, Laos, Myanmar and Hong Kong. Since May 2014, a total of 16 human H5N6 infection cases have been confirmed in 7 provinces of China. Five patients have died from the infection.

Data for the map were retrieved from Centre of Health Protection, Hong Kong and World Organization of Animal Health (OIE).

除了H5N1及H7N9，H5N6是另一種可以傳染人類的高致病性禽流感病毒。現時全球所有人類感染H5N6個案皆發生於中國，而截至2017年二月底，病毒只發現於亞洲地區之禽鳥。自2016年11月起，南韓發生家禽間的H5N6大量爆發。其中以忠清北道最為嚴重，於11月份單月已經報告16宗爆發。為了避免傳到人類身上，過百萬計家禽遭銷毀。希臘在2017年3月3日證實發現感染H5N6病毒的禽鳥，成為亞洲以外首個發現該病毒的國家。希臘的H5N6是否和亞洲的病毒同源，還是透過另一輪基因重組所致，仍有待進一步研究確定。

地圖顯示截至2017年2月12日亞洲各國各行政分區H5N6在禽鳥間累積爆發數目，及人類H5N6個案於中國各省份的分佈情況。除了南韓及中國，H5N6病毒亦於日本、台灣、越南、老撾、緬甸及香港的禽鳥身上發現。自2014年5月，共有16宗人類感染H5N6個案分別於7個省份出現，其中5名患者死亡。

資料源自香港衞生防護中心及世界動物衛生組織。