comparison of the prevalence and incidence of infection with bovine virus diarrhoea virus (bvdv) in denmark and michigan and association with possible risk factors.based on 2 previous surveys on the occurrence of infection with bovine virus diarrhoea virus (bvdv) in danish and michigan dairy herds, the prevalence and incidence of the infection were compared. the presence of certain possible risk factors for the occurrence of infection in the 2 areas were summarized and it was investigated if any of these risk factors had significant effect on the presence of animals persistently infected (pi) with bvdv in the dairy herds. information on the cattle populati ...19958669379
preventive strategy for bvdv infection in north america.despite 60 years of vaccination, bovine viral diarrhea virus (bvdv) infections remain a source of significant economic loss for producers in the united states. control program design in the united states varies by region based on the incidence of bvdv, density of animal populations, animal movement, contact with wildlife populations, level of producer compliance, variation among circulating bvdv strains, prevalent type of production unit or industry and support offered by state institutions. the ...201222458199
review of the michigan upper peninsula bovine viral diarrhea virus eradication evaluate the effects of a voluntary regional bovine viral diarrhea virus (bvdv) control project implemented in the upper peninsula of michigan.201323902449
application of antibody titers against bovine viral diarrhea virus (bvdv) as a measure to detect herds with cattle persistently infected with bvdv.based on the distribution of antibody titers against bovine viral diarrhea virus (bvdv) in 10 michigan dairy herds, it was calculated that screening of 5 young stock for bvdv antibody titer could be used to distinguish herds with persistently infected (pi) animals from herds without such animals. the herds were selected to represent 3 different herd categories: a, herds without use of vaccination and without pi animals (5 herds); b, herds with use of killed vaccine but no pi animals (2 herds); c ...19957578446
prevalence of cattle persistently infected with bovine viral diarrhea virus in 20 dairy herds in two counties in central michigan and comparison of prevalence of antibody-positive cattle among herds with different infection and vaccination status.all cattle in 20 dairy herds randomly selected from herds participating in the dairy herd improvement association program in 2 counties in central michigan were tested for the presence of bovine viral diarrhea virus (bvdv). virus-positive animals were retested to ascertain persistent infection with the virus. a total of 5,481 animals were tested for presence of bvdv. in 9 of the herds, all animals were also tested for virus neutralizing antibody titer. based on infection and vaccination status, ...19957578445
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