Year: 2024
Type: article
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.
Source: Nature Communications
Institutions: University of Oxford, City University of Hong Kong, Chinese University of Hong Kong, University of Lisbon, Universidade Católica Portuguesa, Chattogram Veterinary and Animal Sciences University, Royal Veterinary College, Université Clermont Auvergne, Université de Lyon, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, VetAgro Sup, Épidémiologie des maladies Animales et zoonotiques
Language: English
Subfield: Epidemiology
Field: Medicine
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $6,790
Award: G3235227140
OpenAlex ID: W4396553919