Thursday, August 31, 2006
Tests find no H5N1 avian flu in Alaskan birds
No highly pathogenic H5N1 avian influenza virus has turned up in any of the 13,000 wild migratory birds that federal and state officials have tested since Apr 26, the US government announced yesterday.
The US Department of Agriculture (USDA) said about 113 birds tested positive for other types of avian flu. Those results were expected, officials said, because there are 144 avian flu subtypes, most of which pose no threat to domestic poultry or humans and do not produce noticeable illness in wild birds.
“Although no high-path H5N1 virus has yet been detected, we must remain vigilant and thorough in this important detection and early warning program,” said Interior Secretary Dirk Kempthorne, who is visiting a sampling camp near Barrow, Alaska, this week.
The Alaska sampling has targeted 26 species whose migratory patterns would have likely put them in contact with the H5N1 virus before arriving in Alaska, the USDA said.
The national wild bird surveillance plan is part of the administration’s National Strategy for Pandemic Flu. President Bush allocated $29 million in the fiscal year 2006 avian flu supplemental funding package for wild bird monitoring, which was recently expanded to the lower 48 states, Hawaii, and Pacific territories. The sampling program goal is to test 75,000 to 100,000 migratory birds and 50,000 bird feces samples this year.
In other avian flu news, an H5 avian flu virus was detected this week in a flock of ducks in a Hanoi suburb, according to an Agence France-Presse report today. The two ducks that tested positive were from a market; a total of five were tested, all in good health. The neuraminidase (N) component of the virus had not yet been identified.
“This discovery shows that the virus is still circulating among poultry, especially waterfowl,” Agriculture Minister Hoang Van Nam told AFP. The geographic origin of the ducks could not be determined. Though live poultry trade in Hanoi’s inner district is prohibited, the ban is loosely enforced.
Vietnamese health officials said 2 days ago that the H5N1 virus was found on a small duck farm in the southern Ben Tre province, and an H5 virus resurfaced in ducks and storks in the past month. Though Vietnam has the highest number of human H5N1 cases (93), no human cases have been reported this year.