Allergic tests on cattle vaccinated against Johne's disease
| Autor: | C.V.W. Griffiths, C.E. Isaacs, J.H. MacDonald, D.W. Caldwell, R.L. Chandler |
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| Rok vydání: | 1957 |
| Předmět: | |
| Zdroj: | New Zealand Veterinary Journal. 5:24-29 |
| ISSN: | 1176-0710 0048-0169 |
| DOI: | 10.1080/00480169.1957.33248 |
| Popis: | Extract Johne's disease of cattle is an important economic problem in many countries. Vaccination offers one of the most promising methods of control, but has the disadvantage that cattle so vaccinated may react to the tuberculin test; vaccination may therefore interfere with tuberculosis eradication. Early French work by Vallee and Rinjard (1926) had indicated that vaccination did not result in a positive reaction to a subsequent mammalian tuberculin test, but Doyle (1945), in the United Kingdom, used improved tuberculins (intradermal neck test) and showed that a majority of vaccinated calves gave positive tuberculin reaction 1 to 2 months after vaccination. Buddle (1953), in New Zealand, has obtained strong positive mammalian tuberculin reactions in experimental calves 3 months after vaccination. Stephens (1955) observed vaccinated New Zealand cattle and reported that cattle one year after vaccination gave strong johnin reactions, slightly less avian tuberculin reactions, and moderate mammalian... |
| Databáze: | OpenAIRE |
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