A 10-Year Retrospective Study of Inclusion Body Hepatitis in Meat-Type Chickens in Spain (2011–2021)
Visualitza/Obre
Autor/a
Blanco, Angela
Antilles, Noelia
Nofrarías, Miquel
Valle, Rosa M.
Ramis, Antonio
Biarnés, Mar
Majó, Natàlia
Data de publicació
2021-10-28ISSN
1999-4915
Resum
A surge in fowl adenovirus (FAdV) causing inclusion body hepatitis (IBH) outbreaks has
occurred in several countries in the last two decades. In Spain, a sharp increase in case numbers in
broilers and broiler breeder pullets arose since 2011, which prompted the vaccination of breeders in
some regions. Our retrospective study of IBH cases in Spain from 2011 to 2021 revealed that most
cases were reported in broilers (92.21%) and were caused by serotypes FAdV-8b and -11, while cases
in broiler breeder pullets were caused by serotypes FAdV-2, -11, and -8b. Vertical transmission was
the main route of infection, although horizontal transmission likely happened in some broiler cases.
Despite the inconsistent and heterogeneous use of vaccines among regions and over time, the number
of cases mirrored the use of vaccines in the country. While IBH outbreaks were recorded year-long,
significantly more cases occurred during the cooler and rainier months. The geographic distribution
suggested a widespread incidence of IBH and revealed the importance of a highly integrated system.
Our findings contribute to a better understanding of FAdV infection dynamics under field conditions
and reiterate the importance of surveillance, serological monitoring of breeders, and vaccination of
breeders against circulating serotypes to protect progenies.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
Anglès
Matèries (CDU)
619 - Veterinària
Pàgines
11
Publicat per
MDPI
Publicat a
Viruses
Citació
Bertran, Kateri, Angela Blanco, Noelia Antilles, Miquel Nofrarías, Rosa M. Valle, Àlex Cobos, Antonio Ramis, Mar Biarnés, and Natàlia Majó. 2021. "A 10-Year Retrospective Study Of Inclusion Body Hepatitis In Meat-Type Chickens In Spain (2011–2021)". Viruses 13 (11): 2170. doi:10.3390/v13112170.
Programa
Sanitat Animal
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