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At least 577 records · Page 32Linked to original sources
PubMed1980

A survey of virus infections of the respiratory tract of cattle and their association with disease.

A total of 1590 caves were investigated between May 1972 and December 1975. Twenty-two per cent were treated for respiratory disease and 2 . 5% died of pneumonia. Almost 80% of the respiratory illness occurred in six sharp outbreaks. Samples of virology were collected routinely from 127 healthy calves and from 354 calves treated for respiratory signs and comprised 1143 nasopharyngeal swabs and 1069 sera. Virus infections were detected on 540 occasions including 135 by parainfluenzavirus type 3 (Pi-3), 78 by respiratory syncytial virus (RSV), 103 by rhinovirus, 49 by bovine virus diarrhoea virus (BVDV), 29 by adenoviruses, 53 by reoviruses and 88 by enteroviruses. The seasonal and age distribution of infections differed between viruses. Only infections by RSV, Pi-3 and BVDV were significantly associated with disease.

Adenoviridae Infections↗
PubMed2001

[The effect of a high dose bovine herpes virus 1 marker vaccine in pregnant heifers: virological, bacteriological, immunological, and pathological findings].

To determine a possible relationship between the compulsory vaccination against bovine herpesvirus 1 (BHV1) and cattle wasting disease, the effects of BHV1 vaccination on heifers were investigated. Twenty heifers in the third trimester of pregnancy were randomly allotted to a vaccine and a control group. The vaccine group was vaccinated twice with a 50-fold dose of BHV1 vaccine and the control group was inoculated with the diluent. The experiment was performed double blind. After vaccination, the cows were examined daily and condition scores were determined weekly. Blood, milk, and faeces samples were collected weekly for virological, bacteriological, and immunological investigation. The heifers were euthanized either 9 or 13 weeks after the first inoculation and pathological, virological, and bacteriological examination was performed. No differences were detected between the vaccine group and the control group. No concurrent infections were detected and there were no indications of immunosuppression after vaccination. No relationship between the BHV1 vaccination and wasting disease in cattle was detected.

Animals↗