口腔齿科手机是HBV、H CV、HIV等血液传播性疾病和消化道传染病的传播媒介。
The dental handpiece is transmitting mediums of blood transmitted diseases and infectious diseases of digestive tract, such as HBV, HCV, HIV etc.
店员：最简单的途径就是痢疾杆菌通过污染的手、食品、水源等方式传播，最终均经口入消化道使易感者被传染上了。
Shop assistant: the most common way is that dysentery bacteria spread by dirty hands, food or water, finally enter in alimentary tract by the mouth, infecting the receptor.
更重要的是，艾滋病不会通过消化道或呼吸道传染。
What is more important is that AIDS will not be transmitted through respiratory or digestive tract.
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