title: Undiagnosed primary tuberculosis as a possible major cause of a high infant/child mortality rate.
mesh_terms: D002675:Child, Preschool; D005006:Ethnicity; D006801:Humans; D007223:Infant; D009026:Mortality; D013019:South Africa; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis* / Q000401:mortality / Q000517:prevention & control