Pakistani health officials announced Monday that the H5N1 bird flu virus had been confirmed at commercial poultry operations in Abbottabad and Karachi, with test results returned late last week. Around 600 birds were culled across the two sites following laboratory confirmation.

Authorities described both farms as small and contained, saying the situation posed no serious public threat. Earlier outbreaks had forced the closure of an Islamabad zoo and triggered mass culls at several locations since the country's first confirmed H5N1 cases in March 2006.

Historical summary. TurkishPress restated this wire report, first published in April 2007, in its own words.