Exposure Practices to Animal-Origin Influenza A Virus at the Animal-Human Interface in Poultry and Swine Backyard Farms.
Chile
backyards
exposure risk
influenza virus
poultry
swine
Journal
Zoonoses and public health
ISSN: 1863-2378
Titre abrégé: Zoonoses Public Health
Pays: Germany
ID NLM: 101300786
Informations de publication
Date de publication:
20 Sep 2024
20 Sep 2024
Historique:
revised:
02
08
2024
received:
17
01
2024
accepted:
10
09
2024
medline:
21
9
2024
pubmed:
21
9
2024
entrez:
20
9
2024
Statut:
aheadofprint
Résumé
Backyard production systems (BPS) represent an interface of contact between people, domestic and wild animals. Studies conducted in Chile during the last decade have provided extensive evidence of influenza A virus (IAV) circulation in backyard poultry and swine. The aim of this study was to investigate exposure practices of humans to animal-origin IAV within backyards. Backyard farmers and household members of a total of 101 BPS in the proximity of wetlands located throughout Chile were interviewed between 2021 and 2022. Data were collected on the nature of human-animal contacts through participation in productive activities conducted within backyards, which was used to estimate participants' exposure risk to animal-origin IAV. Additionally, RT-qPCR and serologic IAV active surveillance was carried out in backyard animals. Multilinear regression was used to identify factors associated with exposure risk. Overall, IAV prevalence was 10.1% (95% CI: 4.7%-15.5%) and seroprevalence was 43.5% (95% CI: 29.7%-54.2%), both at the BPS level. Of 180 interviewees, 86% reported participating regularly in poultry or swine exposure activities within the backyard. A greater participation of male participants was observed when evaluating swine exposure activities, while female participation was greater for some activities related to poultry handling. Handwashing was a very extended hygiene practice; however, the use of personal protective equipment was uncommon. Different factors related to participants, households and backyards were associated with an increased exposure risk of participants to animal-origin IAV: (i) older age, (ii) less years of education, (iii) no off-farm work, (iv) greater backyard production value and (v) greater household consumption of backyard products. These results indicate the circulation of IAV in BPS and the frequent human-animal contact at this interface, highlighting the need for awareness campaigns and educational programmes aimed at backyard farmers on prevention and biosecurity measures in the management of backyard animals.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Universidad de Las Américas Chile
Organisme : Agencia Nacional de Investigación y Desarrollo
Organisme : Fondo Nacional de Desarrollo Científico y Tecnológico
Organisme : National Institute of Allergy and Infectious Diseases
Informations de copyright
© 2024 Wiley‐VCH GmbH. Published by John Wiley & Sons Ltd.
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