Abstract
During the early stage of the avian influenza A(H7N9) epidemic in China in March 2013, a strain of the virus was identified in a 4-year-old boy with mild influenza symptoms. Phylogenetic analysis indicated that this strain, which has similarity to avian subtype H9N2 viruses, may represent a precursor of more-evolved H7N9 subtypes co-circulating among humans.
Keywords:
A(H7N9); China; adaption; avian influenza virus; evolution; fomite; genome sequence; pediatric; phylogenetics; respiratory infections; viruses; zoonoses.
Publication types
-
Research Support, Non-U.S. Gov't
MeSH terms
-
Amino Acid Sequence
-
Child, Preschool
-
China / epidemiology
-
Genome, Viral
-
Genotype
-
Humans
-
Influenza A Virus, H7N9 Subtype / classification
-
Influenza A Virus, H7N9 Subtype / genetics*
-
Influenza A Virus, H7N9 Subtype / isolation & purification
-
Influenza, Human / epidemiology*
-
Influenza, Human / virology*
-
Male
-
Molecular Sequence Data
-
Neuraminidase / genetics
-
Phylogeny
-
Sequence Alignment
-
Viral Proteins / genetics
Substances
-
Viral Proteins
-
NA protein, influenza A virus
-
Neuraminidase