TIMELINE-Tracing the bird flu outbreak in U.S. poultry flocks

Tue Apr 28, 2015 7:08pm EDT
 
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April 28 (Reuters) - Two highly pathogenic strains of avian influenza (HPAI) have been found in 14 U.S. states since December, prompting partial to total bans on imports of U.S. poultry and egg products to other countries that were valued at more than $6 billion last year.

The H5N2 strain has been reported in Arkansas, Idaho, Iowa, Kansas, Kentucky, Minnesota, Missouri, Montana, North Dakota, Oregon, South Dakota, Washington and Wisconsin. It has also been identified on farms in Ontario, Canada. The H5N8 strain has been identified in California and also in Idaho, according to the U.S. Department of Agriculture (USDA).

Following is a timeline of the spread of the viruses, according to the USDA's Animal and Plant Health Inspection Service (APHIS), and responses by the industry and trade partners.

Dec. 19, 2014 - Highly pathogenic H5N8 avian influenza strain confirmed in a backyard mixed poultry flock of 130 birds in Douglas county, Oregon.

Dec. 20 - South Korea, one of the top importers of U.S. poultry, halts imports of poultry and poultry products from the United States, a market valued at $113 million in 2014, in response to the HPAI finding.

Jan. 3, 2015 - The first case of the highly pathogenic H5N2 avian influenza strain confirmed in a backyard mixed poultry flock of 140 birds in Benton county, Washington. The virus is believed to have been spread by wild birds migrating along the Pacific flyway which runs along the U.S. West Coast.   Continued...