Tuberculosis Studies in Tennessee: Infection, Morbidity and Mortality in the Families of the Tuberculous1

Prevalence and Incidence of Tuberculosis among Household Associates According to Age and Sex of Index Case

“…For associates of index cases under 55 years of age the prevalence rate was 6.7 per cent, and for associates of older index cases it was 6.3 per cent. For the other than sputum-positive group there was an apparently higher rate, 3.3 per cent, when the index cases were under 55 years of age, than when they were older, 1 In the sputum-positive type, the associates of male index cases had an apparently higher prevalence rate (8.5 per cent) than had associates of female index cases (5.1 per cent). The associates of other than sputum-positive index cases showed no significant difference related to the sex of the index case.…”