Existence of reassortant A (H1N2) swine influenza viruses in Saitama Prefecture, Japan
نویسندگان
چکیده
During two winter seasons between 1999 and 2001, seven strains of influenza virus were isolated from healthy pigs in Saitama Prefecture, Japan. All isolates were identified as A (H1N2) reassortant viruses. Genetic and phylogenetic analyses indicated that they had classical swine-like hemagglutinin (HA) and internal genes, and relatively early human-like neuraminidase (NA) gene. The HA and NA genes belonged to unique clusters of Japanese swine strains. D 2004 Elsevier B.V. All rights reserved.
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