Last Updated：2025/11/21

(medicine) Any infection that causes disease and occurs only when the host's immune system is impaired.

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opportunistic infection

Source Word

opportunistic infection

countable uncountable

(medicine) Any infection that causes disease and occurs only when the host's immune system is impaired.

Japanese Meaning

免疫力が低下している場合にのみ発生する感染症

Patients undergoing chemotherapy are at high risk for an opportunistic infection that can quickly become life-threatening.

化学療法を受けている患者は免疫が低下したときにのみ発生する日和見感染を起こしやすく、それは急速に生命を脅かすことがある。

Sense（1）

(medicine) Any infection that causes disease and occurs only when the host's immune system is impaired.

opportunistic infections

（ plural ）