Recent decades have witnessed an unprecedented emergence of epidemic arbovirus diseases, including yellow fever.¹ The yellow fever outbreak that started in Angola in 2016 developed into the largest and most widespread outbreak of yellow fever reported in Africa in more than 20 years, leading to depletion of all yellow fever vaccine stocks.² The outbreak also resulted in the first documented importation of yellow fever into Asia.³ Furthermore, since late 2016, yellow fever has caused outbreaks in southeastern Brazil close to the most populated areas of South America, with Rio de Janeiro state hosting nearly 16 million people.

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黄热病疫苗接种：估计覆盖率

最近几十年目睹了包括黄热病在内的流行虫媒病毒疾病的空前出现。¹ 2016年在安哥拉开始的黄热病暴发已发展成为非洲20多年来报告的最大，最广泛的黄热病暴发，导致所有黄热病疫苗库存枯竭。²爆发还导致了第一笔有记录的黄热病进口到亚洲。³此外，自2016年下半年以来，黄热病已在巴西东南部靠近南美洲人口最多地区的地方爆发疫情，里约热内卢州接待了将近1600万人。