15 New Cases of Human Infection with H7N9 Virus are Reported to WHO

On Jan. 29, 2014, the National Health and Family Planning Commission of China notified the World Health Organization (WHO) of 15 additional laboratory-confirmed cases of human infection with avian influenza A(H7N9) virus.
 
Details of the cases are as follows:
 
- A 61-year-old woman cook from Shanghai City who became ill on January 6. She was admitted to the hospital on January 20. She is currently in critical condition. The patient has a history of exposure to poultry.

- A 66-year-old woman from Shaoxing City, Zhejiang Province, who became ill on January 15. She was admitted to the hospital on January 17. She is currently in critical condition. The patient has a history of exposure to a live poultry market.

- A 71-year-old woman from Hangzhou City, Zhejiang Province, who became ill on January 12. She was admitted to the hospital on January 18. She is currently in critical condition. The patient has a history of exposure to a live poultry market.

- A 71-year-old farmer from Wenzhou City, Zhejiang Province, who became ill on January 13. He was admitted to the hospital on January 19 and was transferred to another hospital on January 21. He is currently in serious condition. The patient has a history of exposure to a live poultry market.

- A 59-year-old man from Ningbo City, Zhejiang Province, who became ill on January 18. He was admitted to the hospital on January a20 nd was transferred to another hospital on January 22. He is currently in serious condition. He has a history of exposure to poultry.

- A 63-year-old woman farmer from Huzhou City, Zhejiang Province, who became ill on January 11. She was admitted to the hospital on January 15 and was transferred to another hospital on January 18. She is currently in critical condition. The patient has a history of exposure to poultry.

- A 34-year-old woman from Shenzhen City, Guangdong Province, who became ill on January 10. She was admitted to the hospital on January 20 and was transferred to another hospital on January 21. She is currently in critical condition.

- A 53-year-old man from Huai'an City, Jiangsu Province, who became ill on January 22. He was admitted to the hospital on January 26. He is currently in serious condition. The patient has a history of exposure to a live poultry market.

- A 43-year-old woman farmer from Hangzhou City, Zhejiang Province, who became ill on January 23. She was admitted to the hospital on the same day. She has a mild illness. The patient has a history of exposure to a live poultry market.

An 81-year-old farmer from Huzhou City, Zhejiang Province, who became ill on January 21. He was admitted to the hospital on January 23. He is currently in critical condition. The patient has a history of exposure to poultry.

A 63-year-old woman farmer from Huzhou City, Zhejiang Province, who became ill on January 22. She was admitted to the hospital on January 24 and was transferred to another hospital on January 26. She is currently in serious condition. The patient has a history of exposure to a live poultry environment.

- A 57-year-old man from Ningbo City, Zhejiang Province, who became ill on January 15. He was admitted to the hospital on January 23. He has a mild illness. The patient has a history of exposure to poultry.

- A 43-year-old woman from Shenzhen City, Guangdong Province, who became ill on January 17. She was admitted to the hospital on January 26. She is currently in serious condition. The patient has a history of exposure to a live poultry market.

- A 41-year-old woman from Shenzhen City, Guangdong Province, who became ill on January 20. She was admitted to the hospital on January 26. She is currently in critical condition. The patient has a history of exposure to a live poultry market.

- A 31-year-old woman from Shenzhen City, Guangdong Province, who became ill on January 16. She was admitted to the hospital on January 23. She is currently in critical condition. The patient has a history of exposure to a live poultry market.
 
So far, there is no evidence of sustained human-to-human transmission.

The Chinese government continues to take the following measures: strengthen surveillance and situation analysis; reinforce case management and treatment; conduct risk communication with the public and release information; strengthen international collaboration and communication; and conduct scientific studies.

While the recent report of avian influenza A(H7N9) virus being detected in live poultry imported from the mainland to Hong Kong SAR, shows the potential for the virus to spread through live poultry, at this time there is no indication that international spread of avian influenza A(H7N9) has occurred through humans or animals.

Further sporadic human cases of A(H7N9) infection are expected in affected and possibly neighbouring areas, especially given expected increases in the trade and transport of poultry associated with the upcoming Lunar New Year.

WHO advises that travelers to countries with known outbreaks of avian influenza should avoid poultry farms, or contact with animals in live bird markets, or entering areas where poultry may be slaughtered, or contact with any surfaces that appear to be contaminated with faeces from poultry or other animals. Travelers should also wash their hands often with soap and water. Travellers should follow good food safety and good food hygiene practices.

WHO does not advise special screening at points of entry with regard to this event, nor does it currently recommend any travel or trade restrictions.

As always, a diagnosis of infection with an avian influenza virus should be considered in individuals who develop severe acute respiratory symptoms while traveling or soon after returning from an area where avian influenza is a concern.

WHO encourages countries to continue strengthening influenza surveillance, including surveillance for severe acute respiratory infections (SARI) and to carefully review any unusual patterns, in order to ensure reporting of human infections under the IHR (2005), and continue national health preparedness actions.

Source: WHO