Emergence and dissemination of clade 2.3.4.4 H5Nx influenza viruses-how is the Asian HPAI H5 lineage maintained.
Curr Opin Virol
; 16: 158-163, 2016 Feb.
Article
em En
| MEDLINE
| ID: mdl-26991931
ABSTRACT
Highly pathogenic avian influenza (HPAI) A(H5N1) viruses containing the A/goose/Guangdong/96-like (GD/96) HA genes circulated in birds from four continents in the course of 2015 (Jan to Sept). A new HA clade, termed 2.3.4.4, emerged around 2010-2011 in China and revealed a novel propensity to reassort with NA subtypes other than N1, unlike dozens of earlier clades. Two subtypes, H5N6 and H5N8, have spread to countries in Asia (H5N6), Europe and North America (H5N8). Infections by clade 2.3.4.4 viruses are characterized by low virulence in poultry and some wild birds, contributing to wide geographical dissemination of the viruses via poultry trade and wild bird migration.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Vírus da Influenza A
/
Doenças Transmissíveis Emergentes
/
Influenza Humana
/
Genótipo
Limite:
Animals
/
Humans
País/Região como assunto:
Asia
Idioma:
En
Revista:
Curr Opin Virol
Ano de publicação:
2016
Tipo de documento:
Article