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#Avian #Influenza #H7N9 in #China: Preventing the Next #SARS (@WHO, Apr. 2 ‘17)

  Title : #Avian #Influenza #H7N9 in #China: Preventing the Next #SARS. Subject : Avian Influenza, H7N9 subtype (Asian Lineage), poultry e...

11 Jan 2017

#Avian #Influenza #H7N9, #situation #update as of 10 January 2017 (#FAO, edited)

 

Title: #Avian #Influenza #H7N9, #situation #update as of 10 January 2017.

Subject: Avian Influenza, H7N9 subtype, human and poultry infections in China.

Source: Food and Agriculture Organization (FAO), full page: (LINK).

Code: [     ]

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Avian Influenza H7N9, situation update as of 10 January 2017

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Disclaimer

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.

 

Overview

  • 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:
    • 931 confirmed;
    • 355 deaths (since February 2013)
  • Provinces/municipalities:
    • [China]
      • Beijing,
      • Shanghai and
      • Tianjin municipalities;
      • Anhui;
      • Fujian;
      • Guangdong;
      • Hubei and
      • Liaoning provinces;
      • Henan;
      • Hunan;
      • Jiangsu;
      • Jiangxi;
      • Shandong;
      • Zhejiang;
      • Guangxi;
      • Guizhou;
      • Jilin;
      • Qinghai;
      • Hubei;
      • Hong Kong SAR;
      • Macao SAR,
      • Ningxia Hui and
      • Xinjiang Uyghur Autonomous Regions;
    • [Taiwan] Province of China;
    • [Malaysia]
      • Sabah;
    • [Canada]
      • British Columbia.
  • 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

Human cases and positive findings in birds or the environment

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|-- 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 58 human cases in Fujian (28), Jiangsu (13), Zhejiang (13), Guangdong (1), Hunan (1), Hubei (1), Hebei (1) and Xinjiang (1) are currently not known. These cases are therefore not shown on the map. Imported cases in Canada (2) and Malaysia (1) are also not represented.

 

Situation update

  • Animals
    • 9 January, Jiangsu:
      • the province reported that some of the local poultry retail markets contamination rate was high in December, as 15.79% of environmental specimen tested positive for H7 with the majority already confirmed as H7N9 [reference].
    • 9 January, Guangdong:
      • Guangzhou City decided to implement a monthly 3-day closure of LBMs (16-18 of each month) from January to March 2017 in the city's poultry wholesale markets and farmers markets’ poultry trading area [reference].
    • 9 January, Guangdong:
      • Huizhou City disease control department reported that several farmers markets were found to be positive for H7N9 [reference].
    • 6 January, Guangdong:
      • Zhongshan City closed all LBMs from 8 to 21 January  [reference].
    • 5 January, Zhejiang:
      • Wencheng County suspended all live poultry trade from 3 January until 2 February [reference].
    • 4 January, Anhui:
      • Wuhu City suspended all live poultry trade until further notice [reference].
    • 3 January, Shanghai:
      • from 28 January until 30 April, Shanghai will implement the seasonal suspension of live poultry trade [reference].
    • 28-30 December 2016, Jiangsu:

 

Figure 1. Number of positive virological samples from birds or the environment, by province and origin as of 10 January 2017

Number of positive virological samples from birds or the environment, by province* and origin

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|-- Click to enlarge –|

 

  • Humans
    • Since the last update (4 January 2017), 106 new human cases have been reported in:
      • Jiangsu (52),
      • Zhejiang (21),
      • Guangdong (15),
      • Anhui (6),
      • Jiangxi (5),
      • Shandong (2),
      • Fujian (2),
      • Hunan (1),
      • Guizhou (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 10 January 2017

Number of officially reported human cases since February 2013

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|-- Click to enlarge –|

 

Figure 3. Incidence of officially reported human cases by month, based on onset date as of 10 January 2017

Incidence of officially reported human cases by week, based on onset date

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|-- 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=20) reporting dates were used instead.

 

Publications

  • 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).

 

FAO’s support to countries

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Keywords: FAO; Updates; H7N9; Avian Influenza; Human; China.

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