1. Noun, Suru verb, Intransitive verb

   1.

   infection; contagion; becoming infected

2. 2.

   being infected (e.g. with harmful ideas); being influenced (by)

3. Wikipedia definition

   3.

   Infection

Example sentences

• トムは感染してるの？

  Is Tom infected?

• 感染の徴候は見られない。

  There's no sign of infection.