Monday, August 29, 2011

Bird flu fear as mutant strain hits China and Vietnam

Avian flu shows signs of a resurgence, while a mutant strain - able to sidestep vaccines - could be spreading in Asia, the United Nations has warned.

The variant appeared in Vietnam and China and its risk to humans cannot be predicted, veterinary officials said.

Virus circulation in Vietnam threatens Thailand, Malaysia and Cambodia, where eight people have died after becoming infected this year, they warned.

The World Health Organization says bird flu has killed 331 people since 2003.

It has also killed or provoked the culling of more than 400m domestic poultry worldwide and caused an estimated $20bn (£12.2bn) of economic damage. more