Gross pathology associated with highly pathogenic avian influenza H5N8 and H5N1 in naturally infected birds in the UK (2020-2021).
Vet Rec
; 190(1): e731, 2022 Jan.
Article
em En
| MEDLINE
| ID: mdl-34310721
ABSTRACT
BACKGROUND:
Multiple outbreaks with highly pathogenic avian influenza virus (HPAIV) clade 2.3.4.4b viruses, including H5N8 and H5N1, have occurred in the United Kingdom, as well as in other European countries, since late 2020.METHODS:
This report describes the pathology among poultry species (chickens, turkeys, ducks, and pheasants) and captive birds (Black Swans, a whistling duck and peregrine falcons) naturally infected with HPAIV from 22 cases of HPAIV H5N8 and two cases of HPAIV H5N1 outbreaks investigated between October 2020 and April 2021.RESULTS:
On gross examination, pancreatic necrosis was easily identified and most commonly observed in galliformes infected with both subtypes of HPAIV but rarely in anseriformes. In addition, splenic necrosis was also frequently observed in chickens and turkeys infected with HPAIV H5N8. Other less common lesions included cardiac petechiae, serosal haemorrhages and ascites in a variety of species.CONCLUSION:
Given the widespread dissemination of HPAIV infection in susceptible avian species during autumn/winter 2020-2021, these data, when evaluated along with clinical information, is a valuable first step for both veterinarians and field services to evaluate gross pathology at post-mortem to support the diagnosis of HPAIV infection.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Virus da Influenza A Subtipo H5N1
/
Vírus da Influenza A Subtipo H5N8
/
Influenza Aviária
Tipo de estudo:
Risk_factors_studies
Limite:
Animals
País/Região como assunto:
Europa
Idioma:
En
Revista:
Vet Rec
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Reino Unido