Thursday, September 20, 2012

China and Vietnam battle H5N1 outbreaks

Sep 18, 2012 (CIDRAP News) – China today reported a large H5N1 outbreak at a duck farm in Guangdong province, a day after veterinary officials in Vietnam reported the virus struck poultry in Hoa Binh province, according to reports from the World Organization for Animal Health (OIE).

The H5N1 outbreak in China started on Sep 11 at the farm in the city of Zhanjiang, which is a large urban area in the southwestern part of the south China province. The virus sickened 14,050 of 73,800 susceptible ducks, killing 6,300 of them. The remaining birds were culled to curb the spread of the disease.

The source of the virus is unknown, and authorities have limited poultry movement in the area, are screening birds, and have sprayed and disinfected the affected area, according to the report.

Meanwhile, Vietnamese officials yesterday reported that the H5N1 virus struck poultry in a village in Hoa Binh province, a mountainous area located in the northwestern part of the country.

The OIE report said the virus killed all 400 of the susceptible birds and that so far the source of the virus has not been determined. Disinfection and limiting poultry transport are among the measures deployed to control disease spread.

H7N3 in Mexico
In other avian flu developments, Mexican officials are still battling outbreaks of highly pathogenic H7N3 in Jalisco state, an area that is one of the country's biggest egg producers, according to an OIE report yesterday. It detailed three recent outbreaks that struck farms in the middle of August, one that started on Aug 13 and two others that began on Aug 20.

Of 1,090,260 birds that were susceptible at the three locations, the virus sickened 86,569 and killed almost the same number. The report said authorities destroyed 477,930 more to keep the virus from spreading. Read More