Cryptosporidium sp. in stool specimens from diarrhoeic and asymptomatic individuals in the Magdeburg area (East Germany).

Unselected stool specimens from a total of 2,944 individuals with diarrhoea including 1,172 children under 14 years of age were investigated for Cryptosporidium oocysts in the Magdeburg area from 1987 to 1988, 43 (1.46%) were found positive. Three of these were additionally infected with bacterial pathogens (Campylobacter species). In all cases the symptoms of diarrhoea ceased spontaneously after an average of 8 days. The incidence was highest among children and infants under 6 years of age (2.50%). No cryptosporidia were found in stool specimens of 570 healthy individuals of all age groups. Cysts of Giardia sp. were detected more frequently in healthy than in diarrhoeic individuals (3.3% and 2.0%, respectively). The postulation to search for cryptosporidia in all cases of diarrhoea lasting longer than two days is inferred from these results.