Abstract
ABSTRACTWe isolated a strain of H9N2 avian influenza virus from a quail in southern China in May 2015 and named it A/quail/Guangxi/198Q39/2015. All eight gene segments of the strain were sequenced. Sequence analysis indicated that the amino acid motif of the hemagglutinin cleavage site of this H9N2 virus was RSSR↓GLF, which is a typical characteristic of the low pathogenic avian influenza virus. This study will help in better understanding the epidemiology and molecular characteristics of avian influenza virus in wild birds.
Highlights
We isolated a strain of H9N2 avian influenza virus from a quail in southern China in May 2015 and named it A/quail/Guangxi/198Q39/2015
The H9N2 subtype avian influenza virus is widespread in the world and is the most prevalent subtype of avian influenza viruses reported in China over the past decade [5, 6]
H9N2 is characterized as a low-pathogenic avian influenza virus, occasional infections of humans [7,8,9,10] have caused great concerns
Summary
We isolated a strain of H9N2 avian influenza virus from a quail in southern China in May 2015 and named it A/quail/Guangxi/198Q39/2015. The avian influenza virus is a negative-sense, segmented RNA virus that belongs to the genus Influenza type A virus of the family Orthomyxoviridae [1, 2]. There are 18 hemagglutinin (HA) and 11 neuraminidase (NA) subtypes of avian influenza virus based on the antigenic differences of the HA and NA proteins, which are surface glycoproteins on the viral envelope [3, 4]. The H9N2 subtype avian influenza virus is widespread in the world and is the most prevalent subtype of avian influenza viruses reported in China over the past decade [5, 6].
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