有4人出现发烧和黄疸症状，其他30人则无症状。
Four presented with symptoms of fever or jaundice and the other 30 were asymptomatic.
两起病例都是黄热病监测系统报告的，显示了发烧和黄疸症状。
Both cases were reported by the Yellow fever surveillance system and presented with symptoms of fever and jaundice.
裂谷热患者若有出血性黄疸症状，10天后血液中仍可检出病毒。
The virus may be detectable in the blood for up to 10 days, in patients with the hemorrhagic icterus form of RVF.
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