Generally speaking, the incubation period or the premonitory symptoms duration is shorter, the symptom is more serious, the mortality rate is higher.

一般来说，潜伏期或前驱症状持续时间越短，症状越严重，死亡率越高。

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Generally speaking, the incubation period or the premonitory symptoms duration is shorter, the symptom is more serious, the mortality rate is higher.

一般来说，潜伏期或前驱症状持续时间越短，症状越严重，死亡率越高。

youdao