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Human infection with avian influenza A(H7N9) virus - China

On 2 June 2017, the National Health and Family Planning Commission of China (NHFPC) notified WHO of nine additional laboratory-confirmed cases of human infection with avian influenza A(H7N9) virus in China. On 9 June 2017, the NHFPC notified WHO of 12 additional laboratory-confirmed cases of human infection with avian influenza A(H7N9) virus in mainland China.

Details of the case patients

On 2 June 2017, the NHFPC reported a total of nine human cases of infection with avian influenza A(H7N9) virus. Onset dates ranged from 12 to 29 May 2017. Of these nine case patients, three were female. The median age was 56 years (range 35 to 67 years). The case patients were reported from Anhui (1), Beijing (1), Guangxi (1), Hebei (1), Hubei (1), Shaanxi (1), Shandong (2), and Sichuan (1).

At the time of notification, there was one death. Seven case patients were diagnosed as having either pneumonia (4) or severe pneumonia (3). Eight case patients were reported to have had exposure to poultry or live poultry market, and one case patient had no known poultry exposure. No case clustering was reported.

On 9 June 2017, the NHFPC notified WHO of 12 additional laboratory-confirmed cases of human infection with avian influenza A(H7N9) virus in mainland China. Onset dates ranged from 20 May to 3 June 2017. Of these 12 cases, four were female. The median age was 40.5 years (range 4 to 68 years). The cases were reported from Anhui (2), Beijing (3), Chongqing (2), Henan (2), Jiangsu (1), Shaanxi (1), and Shandong (1).

At the time of notification, there were no deaths. Ten cases were diagnosed as having either pneumonia (4) or severe pneumonia (6). Nine cases were reported to have had exposure to poultry or live poultry market, two case patients had no known poultry exposure, and one is under investigation.

One cluster was reported, from Shaanxi province, involving a 68-year-old male, with symptom onset on 23 May 2017, and his wife (a 67-year-old with symptom onset on 26 May 2017 and who was included in the cases discussed above which were reported to WHO on 2 June). Both had histories of exposure in Inner Mongolia Autonomous Region to chickens purchased from a market that they raised in their backyard. Some of the chickens died shortly after purchase and the couple both slaughtered some of the other chickens. This is the first time Inner Mongolia Autonomous Region was reported as the location of likely exposure to the avian influenza A(H7N9) virus. Avian influenza A(H7N9) virus was detected recently for the first time in this region in samples from live bird markets.

To date, a total of 1533 laboratory-confirmed human infections with avian influenza A(H7N9) virus have been reported through IHR notification since early 2013.

Source: http://who.int/csr/don/28-june-2017-ah7n9-china/en/


Tag: the nhfpc notified who of 12 additional laboratory-confirmed cases of human infection with avian influenza a(h7n9) virus in mainland chinaon 9 june 2017the national health and family planning commission of china (nhfpc) notified who of nine additional laboratory-confirmed cases of human infection with avian influenza a(h7n9) virus in china

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