Up to 50% of severely affected persons without treatment will die from yellow fever.
高达50%的感染严重病例若不经治疗，会死于黄热病。
Most people recover from fever and other symptoms within a week without requiring medical attention.
多数人在一周内康复，发热和其它症状消失，无需就医。
Most people recover from fever and other symptoms within a week without requiring medical attention.
多数人在一周内康复，发热和其它症状消失，无需就医。
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