最佳解答: contagiousness 是 contagious + ness 的名詞形式。
英文解釋是：Quality of being contagious.
下面這段話說明：contagion and contagiousness
最後一句也可用作 contagiousness 的造句。
Contagion and contagiousness refers to how easily the spread of Shingles is possible from one person to another. Other words for contagion include "infection", "infectiousness", "transmission" or "transmissability".
Contagiousness has nothing to do with genetics or inheriting diseases from parents.