1. Detection and Molecular Characterization of Two Gammaherpesviruses from Pantesco Breed Donkeys during an Outbreak of Mild Respiratory Disease.
- Author
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Mira, Francesco, Canuti, Marta, Di Bella, Santina, Puleio, Roberto, Lavazza, Antonio, Lelli, Davide, Vicari, Domenico, Purpari, Giuseppa, Cannella, Vincenza, Chiaramonte, Gabriele, Schirò, Giorgia, Castronovo, Calogero, and Guercio, Annalisa
- Subjects
DONKEYS ,RESPIRATORY diseases ,MIXED infections ,HERPESVIRUSES ,SEQUENCE analysis - Abstract
Equid and asinine gammaherpesviruses (GHVs; genus Percavirus) are members of the Herpesviridae family. Though GHVs have been reported in horse populations, less studies are available on gammaherpesviral infections in donkeys. This study reports the co-infection with two GHVs in Pantesco breed donkeys, an endangered Italian donkey breed. Samples (n = 124) were collected on a breeding farm in Southern Italy from 40 donkeys, some of which were healthy or presented erosive tongue lesions and/or mild respiratory signs. Samples were analysed by using a set of nested PCRs targeting the DNA polymerase, glycoprotein B, and DNA-packaging protein genes, and sequence and phylogenetic analyses were performed. Twenty-nine donkeys (72.5%) tested positive, and the presence of Equid gammaherpesvirus 7 and asinine herpesvirus 5 was evidenced. In 11 animals, we found evidence for co-infection with viruses from the two species. Virions with herpesvirus-like morphology were observed by electron microscopic examination, and viruses were successfully isolated in RK-13-KY cell monolayers. The histological evaluation of tongue lesions revealed moderate lympho-granulocytic infiltrates and rare eosinophilic inclusions. The detection of GHVs in this endangered asinine breed suggests the need long-life monitoring within conservation programs and reinforces the need for further investigations of GHV's pathogenetic role in asinine species. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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