Sokoine University of Agriculture

Mycobacterium bovis in rural Tanzania: Risk factors for infection in human and cattle populations

Show simple item record Cleaveland, S. Shawa, D. J. Mfinangac, S. G. Shirimad, G. Kazwalae, R. R. Eblate, E. Sharp, M. 2017-06-24T06:48:00Z 2017-06-24T06:48:00Z 2006-01-13
dc.description Tuberculosis 2006 en_US
dc.description.abstract Although bovine tuberculosis is widespread throughout Africa, very little is known about risk factors for Mycobacterium bovis infection in either human or cattle populations. A human case–control study was conducted in northern Tanzania, comparing risk factors and prevalence of cattle interdermal test positives of cases (cervical adenitis cases from which M. bovis was isolated) with age- and sexmatched controls (selected at random from potential hospital attendees within the community). A cattle cross-sectional study was also set-up involving 27 villages selected at random in four districts, with 10,549 cattle and 622 herds tested, and questionnaire surveys conducted in 239 households. M. bovis was confirmed in seven of 65 (10.8%) human cervical adenitis cases, of which only one came from a household owning infected cattle. M. bovis in human patients was associated with families in which a confirmed diagnosis of tuberculosis had previously been made (po0:001) and with households far (4100 m) from neighbours (p ¼ 0:003). In cattle, overall prevalence of intradermal test positives was low at 0.9% (0.70–1.06%), but widespread, with 11.8% (8.44–13.17%) herds containing at least one reactor. Prevalence of intradermal test positives increased significantly with cattle age (po0:001). Herds with the following risk factors had a significantly greater prevalence of intradermal test positives: 450 cattle in the herd (p ¼ 0:024); herds housed inside at night (p ¼ 0:021) and herds in contact with wildlife (p ¼ 0:041). Furthermore, villages that experienced annual flooding had a higher prevalence of infection (p ¼ 0:043). en_US
dc.language.iso en en_US
dc.publisher Tuberculosis en_US
dc.subject Mycobacterium en_US
dc.subject Tuberculosis en_US
dc.subject Risk factors en_US
dc.subject Tanzania en_US
dc.subject Cattle en_US
dc.title Mycobacterium bovis in rural Tanzania: Risk factors for infection in human and cattle populations en_US
dc.type Article en_US
dc.url en_US

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