In China, the world's most populous nation, officials are struggling to control the spread of bird flu in poultry.
In the fourth outbreak in a month, nearly 9,000 chickens had died and 369,000 domestic birds culled within a three-km (2-mile) radius in the northeast province of Liaoning, an official at the Agriculture Ministry said. The outbreak was detected last week.
"370,000 in one outbreak to be destroyed is really, really big. This is not a good signal," said Noureddin Mona, China representative for the U.N. Food and Agriculture Organisation.
In Vietnam, where 41 people have died of avian influenza, a 24-year-old pregnant woman with a fever and respiratory problems is the latest suspected case in Asia after Indonesia said on Thursday three children were being tested for bird flu. The results are due in a few days.
State media said the woman came from Bac Giang province where bird flu has infected poultry in three communes, killing more than 3,000 chickens, ducks and geese. Bac Giang is near the capital Hanoi.