而主要的水媒病毒为a型肝炎病毒及诺华克病毒；会引起疾病的原生动物，则包括隐孢子虫、内阿米巴原虫、梨形鞭毛虫等。

Among the many waterborne disease-causing viruses are hepatitis a and norwalk; the pathogenic protozoa include cryptosporidium entamoeba and giardia.

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而主要的水媒病毒为a型肝炎病毒及诺华克病毒；会引起疾病的原生动物，则包括隐孢子虫、内阿米巴原虫、梨形鞭毛虫等。

Among the many waterborne disease-causing viruses are hepatitis a and norwalk; the pathogenic protozoa include cryptosporidium entamoeba and giardia.

youdao