| [studies on the frequency of corynebacterium diphtheriae carriers among students of the elementary schools in bari]. | the morbidity of diphtheria reported in bari in 1970 and in 1971 was 17.1 and 19.1 for 100000 inhabitants; in the same years the national average was respectively 1.6 and 1.3. in a epidemiological research carried out in the same period in 1017 school-children of bari not previously selected, 45 carriers of c. diphtheriae (4.42%) were identified. toxigen strains were isolated from 11 carriers (1.08%). the frequency of carriers was higher in the school-children 9-11 years aged (6-04%), lower in t ... | 1975 | 820281 |