Seasonal transmission of avian respiratory virus H7N9 appears to be ending

The outbreak of the avian respiratory virus H7N9 appears to be over for this season. For the third consecutive year, this virus has caused severe respiratory illness and death in persons seeking medical care. It is still not known if there are any or many mild illnesses in people who do not seek medical care and are not reported. Thus, the total number of cases is unknown. The season for transmission of this virus begins around October/November each year with a peak in January/February. Although the virus was concentrated in the east coast provinces (Guangdong, Fujian and Zhejiang), other provinces (Xinjiang Uyghur Autonomous region, Guizhou and Hubei) also reported sporadic cases.

Since exposure to live poultry markets is associated with this infection, travellers can minimize their risk of acquiring one of the many types of avian influenza by avoiding these markets.

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