Immunodepressive effects of trypanosomal infection in cattle immunized against contagious bovine pleuropneumonia
- 1 July 1982
- journal article
- research article
- Published by Wiley in Parasite Immunology
- Vol. 4 (4), 273-282
- https://doi.org/10.1111/j.1365-3024.1982.tb00438.x
Abstract
Groups of cattle infected singly with Trypanosoma vivax and T. congolense and, with a combination of T. vivax and T. congolense, were vaccinated against contagious bovine pleuropneumonia (CBPP) 6 wk before or after infection. All animals were revaccinated 12 wk after primary vaccination. The primary antibody responses in cattle vaccinated 6 wk after infection with T. vivax and a combination of T. vivax plus T. congolense were slightly depressed in contrast to other groups which were similar in their response to the control group. Although secondary antibody responses developed in all infected groups, with a delay in those infected with T. congolense, they did not reach the levels of the controls. In spite of the slight depression in antibody responses, 50% of the vaccinated trypanosomal animals contracted CBPP on exposure to experimental infection while the vaccinated controls were immune. Apparently, the protective immunity to CBPP engendered by vaccination is impaired during infection with African trypanosomes and the level of antibody response to CBPP vaccination in trypanosomal animals does not reflect the degree of immunodepression. The importance of trypanosomiasis control in ensuring success of vaccination campaigns against CBPP is discussed.Keywords
This publication has 22 references indexed in Scilit:
- Immunodepression and the course of infection of a chronic Trypanosoma brucei infection in miceParasite Immunology, 1979
- Immunosuppression in experimental trypanosomiasis: Effects of Trypanosoma brucei on immunization against louping-ill virus and lymphocytic choriomeningitis virusJournal of Comparative Pathology, 1979
- Immunosuppression in bovine trypanosomiasis: Field studies using foot-and-mouth disease vaccine and clostridial vaccineTropical Animal Health and Production, 1977
- Suppressor cells in experimental trypanosomiasisNature, 1977
- East Coast Fever: Some Recent Research in East AfricaAdvances in Parasitology, 1977
- Immunodepression, high IgM levels and evasion of the immune response in murine trypanosomiasisNature, 1976
- Immunosuppression in bovine trypanosomiasisPublished by Wiley ,1974
- The haematocrit centrifuge for the detection of trypanosomes in bloodCanadian Journal of Zoology, 1969
- STUDIES ON CONTAGIOUS PLEUROPNEUMONIA OF CATTLE*Australian Veterinary Journal, 1953