[Investigation of the form of onset in 139 cases of insulin-dependent diabetes mellitus].

A retrospective study of 139 cases of IDDM patients (male 54 cases, female 85 cases) were investigated. Average age 31.74 +/- 12.20 yr. One third of all patients had virus infection before the onset of IDDM and the infection in upper respiratory system and intestine occupied most of the cases (85%). In two cases, the onset of the disease was induced after BCG vaccination. There is no relationship between virus infection and the occurrence of DKA as primary form of onset. The average age in the group of positive virus infection is significantly younger than in the group of negative virus infection (P < 0.02). About one fourth of all cases had positive family history of diabetes which is much higher than the similar reports in Western countries.