An experiment to challenge the resistance to tuberculosis in B.C.G. vaccinated cattle in Malawi.
D000818:Animals; D001500:BCG Vaccine; D002417:Cattle; D007117:Immunization, Secondary; D008295:Malawi; D009163:Mycobacterium bovis / Q000472:pathogenicity; D014374:Tuberculin Test; D014380:Tuberculosis, Bovine / Q000453:epidemiology / Q000276:immunology / Q000517:prevention & control*
D001500:BCG Vaccine