Global & Disaster Medicine

Among all influenza viruses assessed using CDC’s Influenza Risk Assessment Tool (IRAT), the Asian lineage avian influenza A(H7N9) virus (Asian H7N9), first reported in China in March 2013,* is ranked as the influenza virus with the highest potential pandemic risk

Kile JC, Ren R, Liu L, et al. Update: Increase in Human Infections with Novel Asian Lineage Avian Influenza A(H7N9) Viruses During the Fifth Epidemic — China, October 1, 2016–August 7, 2017. MMWR Morb Mortal Wkly Rep 2017;66:928–932. DOI: http://dx.doi.org/10.15585/mmwr.mm6635a2.

The figure above is a map showing the geographic distribution of Asian lineage avian influenza A(H7N9) virus infections of humans reported to the World Health Organization in China during A) epidemic 5 (during October 1, 2016–August 7, 2017) and B) epidemics 1–4 (during March 2013–September 30, 2016).

Confirmed Asian lineage avian influenza A(H7N9) virus infections of humans reported to the World Health Organization (N = 1,557),* by month of illness onset — China,† February 19, 2013–August 7, 2017

 

 

The figure above is a histogram showing confirmed Asian lineage avian influenza A(H7N9) virus infections of humans reported to the World Health Organization (N = 1,557), by month of illness onset in China during February 19, 2013–August 7, 2017.

Geographic distribution of Asian lineage avian influenza A(H7N9) virus infections of humans reported to the World Health Organization — China,* A) epidemic 5 (October 1, 2016–August 7, 2017) and B) epidemics 1–4 (March 2013–September 30, 2016)


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