Chu Shu-hsun points out that every surgeon has been accidentally cut, stuck with a needle, or splashed with blood during surgery. If by chance the patient has a communicable illness, it can be passed on in this way.
朱樹勳指出，幾乎每一個外科醫師在開刀過程中，都曾被刀割、針刺、血濺到，萬一病患有感染性疾病，就可能經由這些途徑被感染。