Abstract
An avian influenza virus (AIV), A/turkey/Israel/09 subtype H6N1, was isolated from turkey poults exhibiting typical pathology associated with AIV infection. The virus was characterized by RT-PCR using AIV subtype-specific primers and by the haemagglutination inhibition test using AIV subtype-specific antisera. The virus has an intravenous pathogenicity index of 0 and possessed a nucleotide sequence at the cleavage site of the hemagglutinin gene, PQIETR*GLF, associated with avian influenza viruses of low pathogenicity. Unlike the two previous H6N2 isolates originating from domestic ducks and mallard, the A/turkey/Israel/09 (H6N1) was isolated from turkeys. The gene sequences of the A/turkey/Israel/09 (H6N1) virus show divergence from the former Israeli H6 isolates.
Highlights
The influenza viruses include three genera, A, B, and C within the family Orthomyxoviridae
Avian influenza viruses (AIVs), all of which are contained in the genus influenza virus A, are an economically important cause of disease in fowl and occasionally affect humans, pigs, and horses [1, 2]
While only a limited number of H and N subtypes are circulating in humans and other mammalian species, all the H and N subtypes are found in avian species [3, 4]
Summary
The influenza viruses include three genera, A, B, and C within the family Orthomyxoviridae. Genetic characterization of this virus revealed that except for the H gene, the remaining 7-gene segments were closely related to those of highly pathogenic avian influenza H5N1 viruses (HPAIVs) found in both poultry and humans [14]. The present study reports on the outbreak of avian influenza (AI) caused by an H6N1 subtype of AIV isolated during January 2009 in Kibbutz Gvulot, in the southern part of Israel.
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