Limited adaptation of chimeric H9N2 viruses containing internal genes from bat influenza viruses in chickens.
Veterinary Microbiology(2019)
Abstract
•Two modified cH9cN2/H17 and cH9cN2/H18 containing HA and NA ORFs of H9N2 were generated in the background of the bat influenza viruses.•cH9cN2/H17 and cH9cN2/H18 replicated poorly in chicken cells and NS1 protein of H18N11 showed stronger IFN-I antagonism activity than H17N10.•cH9cN2/H18 virus was transmissible in chickens, but not cH9cN2/H17, indicated that the internal genes of H18N11 seems to adapt chickens better.
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Key words
Bat influenza virus,H17N10,H18N11,H9N2
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