He survived, but, more alarmingly, a technician in a nearby lab, with no direct exposure, also contracted the disease and died.
但更加令人吃惊的是，附近有个实验室的一名技术人员虽然没有直接接触病毒，但也感染上了那种疾病，他死了。
He found that they'd all contracted a similar but milder disease, cow pox, which vaccinated them against the deadly smallpox.
他发现他们都得过一种相似的但是温和的小病，牛痘，正是由于牛痘使得他们逃过了致死的天花。
He found that they'd all contracted a similar but milder disease, cow pox, which vaccinated them against the deadly smallpox.
他发现他们都得过一种相似的但是温和的小病，牛痘，正是由于牛痘使得他们逃过了致死的天花。
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