An infectious disease caused by pathogens such as viruses or bacteria that can spread among people or animals.
新しい感染症の予防にワクチンが重要だ。
Vaccination is important for preventing new infectious diseases.
感染症の流行で外出を控えた。
I refrained from going out due to an outbreak of an infectious disease.
病院は感染症対策を強化した。
The hospital strengthened its infection control measures.