China - WHO confirms 3 human clusters of avian influenza H7N9 virus ?in January and February 2016 - All cases already accounted for - March 23, 2016

[tetano]

On 18 March 2016, the National Health and Family Planning Commission (NHFPC) of China notified WHO of 29 additional laboratory-confirmed cases of human infection with avian influenza A(H7N9) virus, including 11 deaths.
Onset dates range from 17 January to 19 February. Cases range in age from 21 to 78 years, with a median age of 57 years. Of these 29 cases, 22 (76%) are male. The majority (24 cases, 83%) reported exposure to live poultry, slaughtered poultry, or live poultry markets; the exposure history of 5 cases is unknown or with no clear exposure to poultry. Cases were reported from 6 provinces and municipalities: Zhejiang (7), Hunan (7), Jiangsu (6), Guangdong (4), Fujian (3) and Shanghai (2).
Three clusters were reported:

• The first cluster consists of two 35-year-old males (twin brothers) from Jiangsu Province, the onset dates are respectively 19 January and 1 February. Both have no clear known history of exposure to poultry.
• The second cluster consists of a 29-year-old male from Zhejiang Province and a 56-year-old female (son and mother) from Fujian Province. The onset dates are 4 February and 15 February, respectively. Both have history of exposure to live poultry market.
• The third cluster consists of a 21-year-old female and a 26-year-old male (sister and brother) both from Jiangsu Province, the onset dates are 14 February and 19 February, respectively. The brother reported exposure to live poultry. The sister took care of her brother and has no known history of exposure to poultry.

http://www.who.int/csr/don/23-march-2016-avian-ah7n9-china/en/

[sharon sanders]

As to the clusters:


The twins (1st cluster) were already accounted for in the months of January and February via China HFPC and Jiangsu province HFPC monthly reports:

#719-731 - This line adds 13 cases & 3 deaths. China HFPC announced 28 cases and 5 deaths for January 2016. 15 cases/2 deaths are already listed above. 3 Death

#744-749 - This line adds 6 cases Jiangsu HFPC announced 6 cases including 3 deaths for February 2016 (excluding exported Hong Kong case above #742).Jiangsu province 3 Death


The mother and son (2nd cluster) were already accounted for in the February China HFPC report:

#753-762 - This line adds 10 cases and 11 deaths. China HFPC announced 29 cases & 15 deaths for February 2016. We have 19 cases & 4 deaths already listed above.11 Death


The siblings (3rd cluster) were already accounted for in the February Jiangsu HFPC report:

#744-749 - This line adds 6 cases Jiangsu HFPC announced 6 cases including 3 deaths for February 2016 (excluding exported Hong Kong case above #742).Jiangsu province 3 Death



Source: FluTrackers H7N9 Case List link

[sharon sanders]

Frankly, reports that span from mid-month to mid-month do not add any value. I align our list to the monthly China HFPC commission reports. This is the only way to maintain consistent data.


China - HFPC announces 28 H7N9 bird flu cases, including 5 deaths, for January 2016 - dated February 3, 2016

China - HFPC announces 29 H7N9 cases including 15 deaths for February 2016. 19 cases including 4 deaths previously known - March 11, 2016