It infects the epithelium of the respiratory mucosa, typically through a nasal route of transmission.
它通常通过鼻传播途径，感染呼吸道粘膜上皮。
Osmosis-微生物
It's route of transmission is fecal to oral through consumption of contaminated sources like water and shellfish.
传播途径多为粪口路径，通过摄入被污染的水或鱼贝类。
英语百科
Transmission (medicine)
（重定向自Route of transmission）
In medicine and biology, transmission is the passing of a communicable disease from an infected host individual or group to a particular individual or group, regardless of whether the other individual was previously infected.
The term usually refers to the transmission of microorganisms directly from one individual to another by one or more of the following means: