Transmission of Norwalk virus is through the fecal - oral cycle.诺瓦克病毒的传染是通过粪口循环.Actually the annular virus is mainly through the fecal oral route dissemination.其实轮状病毒主要是通过粪-口途径传播的.Waste material , especially fecal matter...
Transmission of Norwalk virus is through the fecal - oral cycle.诺瓦克病毒的传染是通过粪口循环.One of the ways the parasite spreads is through fecal matter.寄生虫传播的一种方式是通过排泄物。Waste material , especially fecal matter, that is expelled fro...