Deadly tick-borne virus gains ground in Europe as climate warms
科索沃展示了监测如何发现隐藏的传播，并帮助各国在人间病例出现之前做好准备
The US defeated the flesh-eating screwworm once. Now, it’s back with a vengeance
墨西哥的人间病例不断增加，官员们试图遏制这种寄生虫。
