Neringer R, Andersson Y, Eitrem R
Scand J Infect Dis. 1987;19(1):85-90. doi: 10.3109/00365548709032382.
In the middle of October 1982 a large number of people living at Mjövik, a small community in the south-east of Sweden, fell ill after drinking municipal water contaminated with waste water. The epidemic curve showed one single outbreak without secondary cases. No pathogenic agents could be isolated from the water or sick persons. From some persons who fell ill again or did not recover new samples were taken and Giardia lamblia was then isolated from persons with remaining symptoms and previously affected persons. No parasite was found in persons without gastroenteritis. The outbreak at Mjövik was caused by at least 2 agents, 1 unidentified, with a short incubation time, contracted by 557 persons, and Giardia lamblia, with a longer incubation time, contracted by at least 56 persons.
1982年10月中旬，瑞典东南部一个小社区Mjövik的许多居民在饮用了被废水污染的市政供水后生病。疫情曲线显示为单次爆发，无二代病例。从水中或病人身上均未分离出病原体。从一些再次生病或未康复的人身上采集了新样本，随后从仍有症状的人和先前受影响的人身上分离出了蓝氏贾第鞭毛虫。没有肠胃炎症状的人身上未发现寄生虫。Mjövik的疫情由至少两种病原体引起，一种不明病原体潜伏期短，557人感染；另一种是蓝氏贾第鞭毛虫，潜伏期较长，至少56人感染。
