Eight Cases of Human Infection with H7N9 Virus are Reported to WHO

From Feb. 27 through March 1, 2014, the National Health and Family Planning Commission (NHFPC) of China notified the World Health Organization (WHO) of eight additional laboratory-confirmed case of human infection with avian influenza A(H7N9) virus.
 
Details of the cases reported on February 27 are as follows:

A 2-year-old girl from Jinhua City, Zhejiang Province. She became ill on February 23, was hospitalized on February 25 and has a mild illness. The patient has a history of exposure to live poultry.

A 65-year-old woman from Guangzhou City, Guangdong Province. She became ill February 17, was hospitalized on February 24 and is currently in critical condition. The patient has a history of exposure to live poultry.
 
Details of the cases reported on February 28 are as follows:

A 42-year-old man from Huaian City, Jiangsu Province. He became ill on February 15, was hospitalized on February 26 and is currently in severe condition. The patient has a history of exposure to live poultry.

A 77-year-old man from Yongzhou City, Hunan Province. He became ill on February 20, was hospitalized on Februar 25 and is currently in critical condition. The patient has a history of exposure to live poultry.

A 41-year-old man from Yongzhou City, Hunan Province. He became ill on February 17, was admitted to a hospital on February 24 and is currently in critical condition. The patient has a history of exposure to live poultry.
 
Details of the cases reported on Marc 1 are as follows:

A 7-year-old girl from Jinhua City, Zhejiang Province. She became ill on February 26, was hospitalized on February 27 and is currently in severe condition. The patient has a history of exposure to live poultry.

A 6-year-old girl from Jinhua City, Zhejiang Province. She became ill on February 26, was hospitalized on February 27 and is currently in severe condition. The patient has a history of exposure to live poultry.

A 32-year-old man from Fuchuan County, Guangxi Province. He became ill on February 20, was hospitalized on February 26 and is currently in severe condition.

The Chinese government has taken the following surveillance and control measures:  strengthen surveillance and situation analysis; reinforce case management and treatment; and conduct risk communication with the public and release information;
 
While the recent report of avian influenza A(H7N9) virus detection in live poultry exported from mainland China to Hong Kong SAR shows the potential for the virus to spread through movement of live poultry, at this time there is no indication that international spread of avian influenza A(H7N9) has occurred. However as the virus infection does not cause signs of disease in poultry, continued surveillance is needed.

Further sporadic human cases of avian influenza A(H7N9) infection are expected in affected and possibly neighbouring areas.

Should human cases from affected areas travel internationally, their infection may be detected in another country during or after arrival. If this were to occur, community level spread is unlikely as the virus does not have the ability to transmit easily among humans. Until the virus adapts itself for efficient human-to-human transmission, the risk of ongoing international spread of H7N9 virus by travellers is low.

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 feces from poultry or other animals. Travelers should also wash their hands often with soap and water. Travelers 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 travelling 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