Modelling the transmission dynamics of H9N2 avian influenza viruses in a live bird market.
Nat Commun
; 15(1): 3494, 2024 May 01.
Article
em En
| MEDLINE
| ID: mdl-38693163
ABSTRACT
H9N2 avian influenza viruses (AIVs) are a major concern for the poultry sector and human health in countries where this subtype is endemic. By fitting a model simulating H9N2 AIV transmission to data from a field experiment, we characterise the epidemiology of the virus in a live bird market in Bangladesh. Many supplied birds arrive already exposed to H9N2 AIVs, resulting in many broiler chickens entering the market as infected, and many indigenous backyard chickens entering with pre-existing immunity. Most susceptible chickens become infected within one day spent at the market, owing to high levels of viral transmission within market and short latent periods, as brief as 5.3 hours. Although H9N2 AIV transmission can be substantially reduced under moderate levels of cleaning and disinfection, effective risk mitigation also requires a range of additional interventions targeting markets and other nodes along the poultry production and distribution network.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Galinhas
/
Vírus da Influenza A Subtipo H9N2
/
Influenza Aviária
Limite:
Animals
País como assunto:
Asia
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article