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呼吸道感染(英语:Respiratory tract infection)指的是任何涉及到呼吸道部分的感染性疾病,这类疾病一般会被进一步细分为上呼吸道感染(URI、URTI)或者下呼吸道感染(LRT、LRTI)。其中,下呼吸道感染,如肺炎,一般会比上呼吸道感染,如普通感冒,要更为严重些。
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