Taipei, May 12 (CNA) All chickens at a farm in Yunlin County were culled after it was confirmed to have been hit by a highly pathogenic form of the H5N2 avian influenza virus, agricultural officials said Saturday. The farm and surrounding area were disinfected after 14,000 chickens from the farm were culled, the officials from the Bureau of Animal and Plant Health Inspection and Quarantine said. A clinical investigation and epidemiological sampling within a radius of 3 kilometers of the farm will continue, but all fowls in neighboring areas have so far been found to be healthy, and no suspected avian flu cases were reported, they said. A Yunlin agricultural official said Friday that over 13 million chickens are currently being raised on more than 900 farms in the county. This was the first time a highly pathogenic H5N2 outbreak had occurred there, the official added. The first outbreak of the highly pathogenic H5N2 bird flu was recorded on Jan. 9 at a farm in the central county of Changhua. Since then, two other egg and chicken farms in Changhua and one each in Tainan and Pingtung County in southern Taiwan have all been hit by a similar virus. Six other farms, in Nantou, Changhua, New Taipei, Yilan and Taichung, were reported to have been hit by non-highly pathogenic H5N2 outbreaks. (By Lin Huei-chun and Lilian Wu). Source – taiwannews.