Prevalence of low pathogenic avian influenza virus in one live bird market in Eastern China from 2002-2011

[tetano]

Avian Dis. 2013 Mar;57(1):155-8.
Prevalence of low pathogenic avian influenza virus in one live bird market in Eastern China from 2002-2011.
Zhao G, Pan J, Gu X, Zhao K, Chen H, Chen S, Wang X, Peng D, Liu X.
Source

College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China.
Abstract

The role of live bird markets (LBMs) in the perpetuation of avian influenza virus (AIV) has been well studied worldwide; however, there is a paucity of information on the prevalence of different AIV subtypes in LBMs in Eastern China. In this study, long-term surveillance was conducted to investigate the prevalence of AIV in chickens, ducks, and geese in an LBM in Yangzhou city, Jiangsu province, Eastern China, between July 2002 and May 2011. The study used primary virus isolation and subtype-specific reverse-transcription-PCR. In total, 23 different HA-NA subtype combinations were detected, mainly in domestic ducks. This result suggests that domestic ducks play a more important role in LBMs in Eastern China.

PMID:
23678747
[PubMed - in process]

http://www.ncbi.nlm.nih.gov/pubmed/23678747

[gsgs]

Re: Prevalence of low pathogenic avian influenza virus in one live bird market in Eastern China from 2002-2011

> In total, 23 different HA-NA subtype combinations were detected,
> mainly in domestic ducks.

that's surprisingly many. At genbank we then just see H6N2,H6N6,H9N2,H6N1

> This result suggests that domestic ducks play a more important role
> in LBMs in Eastern China.

Asian ducks are apparently somehow different from American mallards
or Eurasian mallards or wild birds or garganels and what they had.

So I think it goes mallards-domestic ducks-chickens
with domestic ducks being the "mixing vessel" where it
transforms/adapts from waterborne/intestine to
contact/respiratory (?) - more chicken-like

http://www.bioone.org/doi/abs/10.1637/10293-062812-Case.1