title: Superinfection in ducks persistently infected with duck plague virus.
abstract: Superinfections with homologous or heterologous strains of duck plague virus resulted in the deaths of birds persistently infected with duck plague virus. Not all birds that were superinfected died. Protection against mortality depended on the route of exposure, strain of the initial duck plague virus, and strain of the superinfecting virus.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D002353:Carrier State / Q000276:immunology / Q000662:veterinary*; D004372:Ducks; D006564:Herpesviridae / Q000276:immunology / Q000472:pathogenicity*; D006566:Herpesviridae Infections / Q000276:immunology / Q000401:mortality / Q000662:veterinary*; D009500:Neutralization Tests; D011201:Poultry Diseases / Q000276:immunology* / Q000401:mortality
chemical_list: D000914:Antibodies, Viral