The H5N1 bird flu virus has been confirmed at another Pakistani poultry farm, an Agriculture Ministry official said on Sunday.
Authorities confirmed outbreaks of the H5N1 virus at two poultry farms in the Northwest Frontier Province (NWFP) in February.
The new outbreak was discovered on a farm near the capital, Islamabad.
"It was an small farm and we have already destroyed a total 3,500 chickens there," Mohammad Afzal, the ministry's livestock commissioner, told Reuters.
From Reuters.