[Tuberculin investigation and BCG vaccination. Observations on the school children of District VII of Mexico City].
D001500:BCG Vaccine; D002648:Child; D006801:Humans; D008800:Mexico; D009163:Mycobacterium bovis; D012572:School Health Services; D014373:Tuberculin; D014374:Tuberculin Test; D014376:Tuberculosis; D014611:Vaccination
D001500:BCG Vaccine; D014373:Tuberculin
BCG VACCINATION; SCHOOL HEALTH; TUBERCULIN REACTION; TUBERCULOSIS IN CHILDHOOD