An outbreak of cryptosporidiosis among visitors to a public swimming pool occurred in the late summer of 2002. We performed a retrospective cohort study, including 3 cohorts, A) 178 school-children who visited the pool on a single occasion, B) 263 arbitrarily chosen school children, aged 6-12 y, and their household members, living within the municipality where the outbreak occurred, and C) an additional 28 individuals with laboratory confirmed cryptosporidiosis. The outbreak lasted 4 weeks and affected an estimated 800-1000 individuals. The primary attack rate was 40-50

作者：Mona, Insulander；Marianne, Lebbad；Thor Axel, Stenstr?m；Bo, Svenungsson

来源：Scandinavian journal of infectious diseases 2005 年 37卷 5期