prevention of avian influenza

China is strengthening measures to prevent the spread of H7N9 bird flu, which has killed dozens of people, including the ban on the sale of live poultry.

Although there is no evidence of human-to-human transmission, the newly discovered A / H5N6 influenza virus strain in Vietnam is warned to have very high virulence.

A 35-year-old man in China has just discovered influenza H7N9, showing