Infectious Diseases 2008

Infectious Diseases 2008

H7N3 in Rhode Island

USA 21 August, 2008 The H7N3 strain of avian influenza has been detected in four swans found in the Seekonk River.
The cases were discovered as part of routine surveillance by the Rhode Island Department of Environmental Management. The swans were caught near the Swan Point Cemetery in Providence, and subsequently tested by the USDA.
In June, Tyson Foods, based in Springdale, Ark., announced that breeder hens at one of its farms in northwestern Arkansas had antibodies to the H7N3 avian influenza virus. Last September a highly pathogenic strain of H7N3 subtype infected poultry at a commercial poultry farm in Saskatchewan (Canada), and in 2004 both the low- and highly pathogenic strains of the H7N3 virus were responsible for outbreaks in British Columbia.
The last reported H7N3 outbreaks in the United States occurred in 2004 at three Texas farms.