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我们于1988年10～12月对济阳、陵县6个乡镇10个村庄的全民,进行了蓝氏贾第鞭毛虫感染状况的调查。检出蓝氏贾第鞭毛虫感染者305人,平均感染率
We investigated the status of Giardia lamblia infection from October to December 1988 to all the people in 10 villages in 6 townships in Jiyang and Lingxian. 305 cases of Giardia were detected, the average infection rate