State-controlled media reports from Burma say authorities have slaughtered more than 400,000 birds to stop the spread of avian influenza.
Since Burma declared a bird flu outbreak in March, authorities have killed at least 200,000 chickens and almost as many quail.
Four townships in Sagaing division and six townships in Mandalay division were affected by the virus.
Officials from the United Nations' Food and Agriculture Organization are in Burma to help control the outbreak.
Burma's Livestock Breeding and Veterinary Department said last week it had brought the outbreak under control.
Information for this report is provided by AFP and AP.