contagium

詳細解釋：

con.ta.gium

n.（名詞）
【複數】 con.ta.gia[-j…]
The direct cause, such as a bacterium or virus, of a communicable disease.Also called contagion
傳染原：傳染性疾病的直接病因，例如某種細菌或病毒也作 contagion

來源：
Latin cont3gium [contagion, contamination]
拉丁語 cont3gium [感染源，傳染]
from cont3giô * see contagion
源自 cont3giô *參見 contagion