由糞口傳染的病毒種類繁多，有些具有外套膜，有些則沒有。
具有代表性的例子
有外套膜的糞口傳染病毒： 甲型肝炎病毒（HAV）
無外套膜的糞口傳染病毒： 諾羅病毒（Norovirus）
There are numerous types of viruses that are transmitted via the fecal-oral route, some with envelopes and others without. Representative examples include hepatitis A virus (HAV), which has an envelope, and norovirus, which lacks an envelope.
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