Chickens can durably clear herpesvirus vaccine infection in feathers while still carrying vaccine-induced antibodies - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Veterinary Research Année : 2020

Chickens can durably clear herpesvirus vaccine infection in feathers while still carrying vaccine-induced antibodies

Sylvie Rémy
  • Fonction : Auteur
  • PersonId : 1207400
Gilles Le Pape
  • Fonction : Auteur
  • PersonId : 1065683
David Gourichon
Yannick Gardin
  • Fonction : Auteur

Résumé

tMarek’s disease (MD) is a major disease of chickens induced by Marek’s disease virus (MDV) associated to lethal lymphomas. Current MD vaccines protect against lymphomas, but fail to prevent infection and shedding. The control of MDV shedding is crucial in order to eradicate this highly contagious virus. Like pathogenic MDV, MD vaccines infect the feather follicles of the skin before being shed into the environment. MD vaccines constitute excellent models to study virus interaction with feathers, the unique excretion source of these viruses. Herein we studied the viral persistence in feathers of a MD vaccine, the recombinant turkey herpesvirus (rHVT-ND). We report that most of the birds showed a persistent HVT infection of feathers over 41 weeks with moderate viral loads. Interestingly, 20% of the birds were identified as low HVT producers, among which six birds cleared the infection. Indeed, after week 14–26, these birds named controllers had undetectable HVT DNA in their feathers through week 41. All vaccinated birds developed antibodies to NDV, which lasted until week 41 in 95% of the birds, including the controllers. No correlation was found between HVT loads in feathers and NDV antibody titers over time. Interestingly, no HVT DNA was detected in the spleens of four controllers. This is the first description of chickens that durably cleared MD vaccine infection of feathers suggesting that control of Mardivirus shedding is achievable by the host.
Fichier principal
Vignette du fichier
13567_2020_Article_749.pdf (3.13 Mo) Télécharger le fichier
13567_2020_749_MOESM1_ESM.pdf (63.31 Ko) Télécharger le fichier
13567_2020_749_MOESM2_ESM.pdf (20.38 Ko) Télécharger le fichier
Origine : Publication financée par une institution
Origine : Publication financée par une institution
Origine : Publication financée par une institution

Dates et versions

hal-02495385 , version 1 (02-03-2020)

Licence

Paternité

Identifiants

Citer

Sylvie Rémy, Gilles Le Pape, David Gourichon, Yannick Gardin, Caroline Denesvre. Chickens can durably clear herpesvirus vaccine infection in feathers while still carrying vaccine-induced antibodies. Veterinary Research, 2020, 51 (1), 12 p. ⟨10.1186/s13567-020-00749-1⟩. ⟨hal-02495385⟩
99 Consultations
96 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More