Animal health officials in Burma have reported a fresh outbreak of bird flu in chickens at two poultry farms in the country's south.
Officials said dead chickens at the farms were found to have been infected with the lethal H5N1-strain of the virus.
Burma has reported several outbreaks of bird flu among poultry, but has not reported any cases among humans.
Some 192 people have died from the virus since the outbreak began in 2003, mostly in Asian countries.
The World Health Organization says close contact with dead or sick birds is the principal source of human infection.