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The prevalence of influenza viruses in swine and the antigenic and genetic relatedness of influenza viruses from man and swine.
Abstract Serological and virological surveillance of swine during 1976-77 showed that Hsw1N1 influenza viruses were prevalent throughout the swine population of the U.S., particularly in the northernExpand
Replication of avian influenza A viruses in mammals.
It is suggested that influenza A viruses currently circulating in avian species represent a source of viruses capable of infecting mammals, thereby contributing to the influenza A antigenic pool from which new pandemic strains may originate. Expand
The pathogenesis of Rift Valley fever in lambs.
A hitherto unreported paramyxovirus of turkeys.
Examination of turkey sera from five separate flocks indicated natural infection with the paramyxovirus to be relatively widespread, and experimental infection of turkeys produced only mild respiratory disease. Expand
Influenza viral infection of swine in the United States 1988–1989
Swine are an animal reservoir for influenza viruses capable of causing disease in humans and it is demonstrated that subtype H1 influenza viruses continue to circulate at high frequency among swine in the north-central U.S.A. Expand
Neutralizing epitopes of the H5 hemagglutinin from a virulent avian influenza virus and their relationship to pathogenicity.
The findings indicate that viruses with mutations in four of five epitopes were no less virulent than the wild type, producing a rapidly fatal disease, while all viruses with mutation in the fifth epitope (group 1 mutants) were attenuated. Expand
Vaccination of swine with thymidine kinase-deficient mutants of pseudorabies virus.
Pigs that had been exposed to PRV-TK- were immune to challenge exposure with a virulent strain of PRV, indicating that colonization of the ganglia by a super-infecting virulent PRV strain was considerably reduced by vaccination. Expand
Serologic Evidence of H1 Swine Influenza Virus Infection in Swine Farm Residents and Employees
Swine virus seropositivity was significantly associated with being a farm owner or a farm family member, living on a farm, or entering the swine barn >4 days/week. Expand
Virus replication in the digestive tract of ducks exposed by aerosol to type-A influenza.
Enteric infection and cloacal shedding of influenza virus was demonstrated in ducks exposed experimentally to an aerosol of an avirulent type-A influenza virus. The fluorescent-antibldy technique wasExpand