Recently, United Nations warned of a possible resurgence of bird flu, saying a new mutation of the H5N1 influenza virus was spreading across Asia and other regions. The Organization for Food and Agriculture Organization (FAO) urged to increase monitoring and preparing for a potential outbreak of the virus.
The virus was eliminated from most of the 63 infected countries at its peak in 2006, after a mass slaughter of poultry, but since 2008 has expanded geographically in both birds in captivity and released, in part because migration patterns, the FAO said.
Countries could face major problems are Bangladesh, China, Egypt, Indonesia and Vietnam, where the FAO said the virus is firmly installed.
Birds in the wild can introduce the virus, but the actions of overexploitation in the production and marketing strategies help the spread of the virus.