Serological survey of avian metapneumovirus in vaccinated and unvaccinated broiler chickens in Hong Kong.
Avian metapneumovirus (aMPV)
Biosecurity
Broiler
Seroprevalence
Journal
Tropical animal health and production
ISSN: 1573-7438
Titre abrégé: Trop Anim Health Prod
Pays: United States
ID NLM: 1277355
Informations de publication
Date de publication:
29 Apr 2023
29 Apr 2023
Historique:
received:
04
10
2022
accepted:
12
04
2023
medline:
1
5
2023
pubmed:
29
4
2023
entrez:
29
4
2023
Statut:
epublish
Résumé
In chickens, avian metapneumovirus (aMPV) causes the swollen head syndrome, a respiratory disease often associated with a reduction in egg production. The virus' epidemiology in East and Southeast Asia is poorly understood. An aMPV serological survey was conducted on broiler chicken farms of Hong Kong SAR to assess the seroprevalence of aMPV in unvaccinated batches and the serological status of vaccinated batches. Blood samples were collected from 53-93-day-old chickens in 24 chicken farms of Hong Kong SAR and sera were tested for aMPV antibodies by ELISA. Seroprevalence in aMPV unvaccinated birds was 80.6% (95% confidence interval (CI): 78.9-82.2) with a high variation between batches. Batch-level seroprevalence was not significantly different between birds hatched during the rainy season (74.3%, 95% CI: 64.0-84.5) and the ones hatched during the dry season (88.7%, 95% CI: 80.1-97.3, p = 0.5). The high seroprevalence and high antibody titers that are reported in this study indicate repeated exposure of broiler chickens to aMPV in Hong Kong SAR poultry farms. Based on these results, we recommend improving the surveillance of respiratory pathogens and applying appropriate prophylactic measures against aMPV such as vaccination.
Identifiants
pubmed: 37119359
doi: 10.1007/s11250-023-03592-6
pii: 10.1007/s11250-023-03592-6
doi:
Substances chimiques
Antibodies, Viral
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
179Informations de copyright
© 2023. The Author(s), under exclusive licence to Springer Nature B.V.
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