Officials in Bangladesh say at least one more district has been hit by an outbreak of bird flu.
The deadly H5N1 strain of avian influenza was reported among poultry in Munshiganj, bringing the total of affected districts to at least 44.
Nearly one million birds have been slaughtered in Bangladesh since bird flu was detected there in March of 2007.
No human cases have been detected in the country.
The World Health Organization says 227 people around the world have died from bird flu since 2003.
Health experts fear the virus will mutate into a form that could be easily spread among humans, triggering a global pandemic.