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China - FAO reports says there are 1040 cumulative H7N9 cases - January 24, 2017

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  • China - FAO reports says there are 1040 cumulative H7N9 cases - January 24, 2017

    ARCHIVE H7N9 situation update

    24 January 2017, 17:00 hours; Rome

    The next update will be issued on 7 February 2017

    Information provided herein is current as of the date of issue. Information added or changed since the last H7N9 situation update appears in red. Human cases are depicted in the geographic location of their report. For some cases, exposure may have occurred in one geographic location but reported in another. For cases with unknown onset date, reporting date was used instead. FAO compiles information drawn from multiple national (Ministries of Agriculture or Livestock, Ministries of Health, Provincial Government websites; Centers for Disease Prevention and Control [CDC]) and international sources (World Health Organization [WHO], World Organisation for Animal Health [OIE]) as well as peer-reviewed scientific articles. FAO makes every effort to ensure, but does not guarantee, accuracy, completeness or authenticity of the information. The designation employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of FAO concerning the legal or constitutional status of any country, territory or sea area, or concerning the delimitation of frontiers.


    Situation: Influenza A(H7N9) virus with pandemic potential.
    Country: China; three human cases originated in China and were reported in Malaysia (1) and Canada (2).
    Number of human cases: 1040 confirmed; 368 deaths (since February 2013)
    Provinces/municipalities: Beijing, Shanghai and Tianjin municipalities; Anhui; Fujian; Guangdong; Hubei and Liaoning provinces; Henan; Hunan; Jiangsu; Jiangxi; Shandong; Zhejiang; Guangxi; Guizhou; Jilin; Qinghai; Hubei; Taiwan Province of China; Hong Kong SAR; Macao SAR, Ningxia Hui and Xinjiang Uyghur Autonomous Regions; Sabah (Malaysia); British Columbia (Canada).
    Animal/environmental findings: over 2,000 virological samples from the environment, chickens, pigeons, ducks and a tree sparrow tested positive; positives mainly from live bird markets, vendors and some commercial or breeding farms.
    FAO actions: liaise with China and partners, monitor situation, monitor virus evolution, conduct market chain analysis, risk assessment, surveillance guidance and communication.
    Map. Human cases and positive findings in birds or the environment

    Click to enlarge - Note: Human cases are depicted in the geographic location where they were reported; for some cases, exposure may have occurred in a different geographic location. Precise location of 62 human cases in Fujian (28), Jiangsu (13), Zhejiang (13), Guangdong (1), Hunan (5), Hubei (1), Hebei (1) and Xinjiang (1) are currently not known.

    Situation update


    • 17 January, Guangdong: Provincial Health and Family Planning Commission carried out surveillance in 21 cities in the province involving monitoring of influenza-like-illness and pneumonia cases in hospitals and environmental sampling at live bird markets. In the first week of January 2017, 637 environmental samples from 21 markets in 15 cities were collected, of which 60 samples (9.42%) tested positive for H7 [reference]. Jiangmen City also reported that the virus detection rate in live bird markets (environmental sampling) was higher compared to previous years [reference].
    • 16 January, Guangdong: Meizhou City Animal CDC collected 38 pooled poultry samples, of which 3 tested positive for H7N9 virus [reference]. In Zhaoqing City, live poultry trade will be suspended for seven days starting from 21 January [reference].
    • 15 January, Zhejiang: Wenzhou City CDC detected H7N9 virus in environmental samples collected in live poultry trading points in the city (no further information is available) while live bird trade was suspended in Yueqing City, Rui?an City and Lucheng District until 13 February [reference].
    • 13 January: MoA published the results of the national animal H7N9 surveillance for the month of December. 181,139 serum and 53,102 virological samples were collected from 7,605 locations in 28 provinces. Eight virology samples tested positive for H7N9 virus in Zhejiang (1 chicken), Anhui (3 chickens and 2 ducks) and Guangdong (2 chickens) Provinces. The affected sites included five markets, one farm and one slaughterhouse in five different cities. In addition, 349 serum samples (347 chickens, 1 duck and 1 goose) were tested positive for H7 antibodies in Gansu (300), Jiangsu (22), Qinghai (16), Shanxi (10), and Liaoning (1) Provinces. Sites with seropositive birds were 49 chicken farms, 5 live bird markets or collection points, 1 duck farm and 1 goose farm [reference].
    • 11 January, Anhui: live poultry trade was suspended in the central urban area of Bozhou City, which has reported two human cases of H7N9 since December 2016 [reference].
    Figure 1. Number of positive virological samples from birds or the environment, by province and origin as of 24 January 2017

    Click to enlarge


    • Since the last update (10 January 2017), 109 new human cases have been reported in Jiangsu (34), Zhejiang (23), Anhui (15), Guangdong (11), Hunan (11), Jiangxi (5), Fujian (4), Guizhou (1), Henan (1), Hong-Kong SAR (1), Hubei (1), Macao SAR (1), and Shanghai (1).
    • For detailed information on human cases, please refer to WHO's Disease Outbreak News.
    Figure 2. Number of officially reported human cases since February 2013 as of 24 January 2017

    Click to enlarge

    Figure 3. Incidence of officially reported human cases by month, based on onset date as of 24 January 2017

    Click to enlarge - Note: For cases with unknown onset dates from wave 1 (n=7), wave 2 (n=2), wave 3 (n=146), wave 4 (n= 27) and wave 5 (n=129) reporting dates were used instead.


    • In addition to the surveillance findings by MoA and MoH, 1,728 virologically positive samples have also been reported in 12 peer-reviewed articles (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12). A total of 71,920 samples have been collected in these studies since April 2013, of which 1,728 (2.4%) were positive for H7N9 (1,215 environmental samples, 501 chickens, 1 goose and 1 tree sparrow).

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