Avian Flu Scan for Dec 10, 2014

H5N2 in British Columbia
H5N1 outbreak in Vietnam

H5N2 confirmed at 3 more British Columbia poultry farms

Canadian officials yesterday confirmed H5N2 avian flu in the three most recent poultry outbreaks in British Columbia's Fraser Valley, bringing to five the number of farms in the area infected with that strain, according to a report filed by the Canadian Food Inspection Agency (CFIA) with the World Organization for Animal Health (OIE).

The farms, first identified as harboring H5 avian flu on Dec 4 and Dec 6, include two chicken farms and a turkey farm. The two chicken farms received birds from one of the first two outbreak farms, located in Chilliwack. The three newly confirmed outbreaks are all in Abbotsford, about 5 miles from Chilliwack, according to the OIE report.

The first infected chicken farm housed 14,000 susceptible broilers or breeders. In one barn 250 37-week-old chickens died from H5N2, and the remaining birds were culled to prevent disease spread. The other chicken farm reported 22 H5N2 deaths in 41-week-old poultry; the remainder of the 27,000 chickens housed there were destroyed.

The turkey farm houses 31,000 birds, 50 of which, at 9 weeks of age, died from H5N2. Officials have yet to cull birds on that farm, the OIE report said. All told, the farms hold or held 72,000 birds, 322 of which died and 40,728 of which were destroyed.
Dec 9 OIE report

On Dec 8 the CFIA announced it had established a "primary control zone" to stop H5N2 spread using restrictions on poultry movement and other measures, with support from British Columbia authorities and the poultry industry.

"The primary control zone is bordered on the west by the Pacific Ocean, on the south by the United States border, on the north by Highway 16, and on the east by the border between British Columbia and Alberta," the CFIA said in a statement.

The zone is divided into three disease control zones: infected, restricted, and security.
"The three zones represent relative levels of risk, and movement restrictions vary accordingly," the agency explained. "Most of the restrictions apply to the infected and restricted zones because of the greater potential that the virus can spread."
Dec 8 CFIA statement


Vietnam responds to detection of H5N1 in chickens

Vietnamese health authorities are implementing numerous precautionary measures after 177 chickens in a coastal province tested positive for H5N1, according to a Dec 8 report from Malaysia's national news agency Bernama.

All affected chickens were from the Cau Ke district in the Phong Thanh commune, which is located in the Mekong Delta province of Tra Vinh. Vietnamese health officials have set up checkpoints near the surrounding provincial districts of Cang Long, Cau Quan, Thong Hoa, and Dinh An, as well as near waterways in Tra Vinh.

The Tra Vinh People's Committee is overseeing livestock and poultry vaccination, sterilization practices on local farms and slaughterhouses, and communication to residents, the story said. Quarantine staff are monitoring poultry activity at markets, wharfs, and bus stations.

In early 2014 a flock in the Cau Ke district was the site of 1 of 25 H5N1 outbreaks causing the deaths of 16,500 chickens in 12 Vietnamese communes.
Dec 8 Bernama article

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