title: Variation in protection by BCG: implications of and for heterologous immunity.
mesh_terms: D000818:Animals; D001500:BCG Vaccine; D004781:Environmental Exposure; D006801:Humans; D009164:Mycobacterium Infections / Q000453:epidemiology / Q000276:immunology / Q000517:prevention & control*; D015995:Prevalence; D016896:Treatment Outcome
chemical_list: D001500:BCG Vaccine