National Health and Family Planning Commission announced on March 31, three cases of human infection with the H7N9 avian influenza are found in Shanghai and Anhui Province. The discovery of human infection by H7N9 avian influenza is the world’s new subtype of influenza virus, which has not been included in the country’s infectious disease monitoring and reporting system. The experts are now studying the virus and its ability of infection. At present there is no effective vaccine at home and abroad that is against the H7N9 avian influenza virus.
China CDC experts, according to the current results of 3 cases and observation of 88 close contacts of medical staffs, suggested that the H7N9 avian influenza virus does not show a strong human-to-human transmission.