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什麼原因引起麻疹
● 傳染源：患者為唯一傳染源。一般認為出疹前後5天均有傳染性。
● 傳播途徑：患者咳嗽、打噴嚏時，病毒隨飛沫排出，直接到達易感者的呼吸道或眼結膜而致感染。間接傳播很少。
● 易感人群：未患過麻疹，也未接種過麻疹疫苗者均為易感者。病後有較持久的免疫力。
註：本書內容為簡體中文
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