Isolation, sequencing and phylogenetic analysis of the hemagglutinin, neuraminidase and nucleoprotein genes of the Chilean equine influenza virus subtypes H7N7 and H3N8.
We report here on the isolation and sequencing of the hemagglutinin, neuraminidase and nucleoprotein genes of the Chilean equine influenza virus subtypes H7N7 (A/equi-1/Santiago/77, Sa77) and H3N8 (A/equi-2/Santiago/85, Sa85). The sequences obtained allowed a variability analysis, which indicated significant differences when compared with other isolates. We found that Chilean isolates are more similar to the North American variety than to European isolates. Isolate Sa77 is a good candidate for inclusion in a vaccine as it is the latest isolate of the subtype H7N7 and is probably better-adapted to the equine host. Isolate Sa85, of subtype H3N8, also appears to be a good candidate since it has no significant differences in the main antigenic sites with recent isolates.
Müller
Ilse
I
Bios Chile IGSA.
Jaureguiberry
Beltrán
B
Valenzuela
Pablo D T
PD
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002677:Chile; D006388:Hemagglutinins / Q000235:genetics*; D006736:Horses; D053123:Influenza A Virus, H3N8 Subtype; D053126:Influenza A Virus, H7N7 Subtype; D009980:Influenza A virus / Q000737:chemistry* / Q000235:genetics; D008969:Molecular Sequence Data; D009439:Neuraminidase / Q000235:genetics*; D009698:Nucleoproteins / Q000235:genetics*; D010802:Phylogeny; D012367:RNA, Viral / Q000032:analysis; D020133:Reverse Transcriptase Polymerase Chain Reaction
D006388:Hemagglutinins; D009698:Nucleoproteins; D012367:RNA, Viral; D009439:Neuraminidase