Human infection with avian influenza A(H7N9) virus – China: Update

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Since March 2013, when the avian influenza A(H7N9) virus infection was first detected in humans, a total of 1567 laboratory-confirmed human cases, including at least 615 deaths, have been reported to WHO (Figure 1) in accordance with the International Health Regulations (IHR 2005). So far, all but three reported cases have occurred in China. In the latest wave (the sixth wave, which began in October 2017), only three human cases have been detected; meanwhile there have been fewer A(H7N9) virus detections in poultry and environment samples, according to reports from mainland and the Hong Kong Special Administrative Region China.

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