But it finds its way to humans when infected ticks casually latch on to them in wooded areas.

但是树木繁茂的地区，被感染的蜱虫就会找到通往人类的路。

Human activity has led to an increase in mosquito and tick-borne infections over the past decade.

去十年里，人类活动导致了蚊子和蜱虫传播感染风险的增加。

Lyme disease is contracted from tick bites, and ticks are found outdoors, fitting the patient's history.

莱姆病是由蜱叮咬感染的，蜱多见于户外，符合患的旅游史。

RICHARD OSTFELD: What we found is that the probability that a tick is gonna acquire an infection when it feeds on a white-footed mouse is about 90 percent.

理查德·奥斯费尔德：我们发现，当鹿鼠被蜱虫叮咬时，蜱虫感染的概率约为90%。

(bright music) Impalas living in between African woodlands and Savannahs are prone to catching ticks, which can lead to infectious diseases, paralysis, even death.

（明亮的音乐）生活林地和大草原之间的黑斑羚很容易感染蜱虫，这会导致传染病、瘫痪，甚至死亡。

Doctors would also check if patients were recently exposed to infected tick areas like forests or urban parks with exuberant vegetation.

医生还会检查患是否最近接触被感染蜱虫的区域，比如森林或植被茂盛的城市公园。

We might not know we have it, like a virus or tick infection or mold we're exposed to.

我们可能不知道自己已经感染了，比如病毒、蜱虫感染或霉菌暴露。

Better established is Lyme disease, caused by a spirochete that we get from the bite of ticks carried by mice and deer.

比较确定的是莱姆病，它是由老鼠和鹿携带的蜱虫叮咬后感染的螺旋体引起的。