Deputy Minister of Health Nguyen Thanh Long said that the development of A/H7N9 bird flu remains complicated as the source of transmission has not been clearly identified.

Dr Nguyen Van Binh, head of the General Department of Preventive Medicine urged all local health departments to intensify supervision and monitoring of A/H7N9 bird flu development.

He said there is high risk of A/H7N9 bird flu spreading from China to Vietnam through wild animals like birds including pigeons.

The Ministry of Health on April 7 gave instructions on how to take, preserve and transport A/H7N9 bird flu samples. Accordingly, all samples should be protected at temperature of 4 degree Celsius and transferred to laboratories within 48 hours.

VOV