那些感染了疾病的人们，遭受到了前所未有的痛楚。
Those who contracted the disease encountered pain like they had never known.
据估计，该国有150多万只羊感染了这种疾病。
It is estimated that over 1.5 million sheep are infected with the disease in the country.
性传播疾病可以通过那些感染了这些疾病但本身并不知情的人传播。
STDs can be spread by people who don't know they are infected.
一个感染了兔热病的人不能将疾病传播给另一个人。
A person infected with tularemia cannot pass the disease on to another person.
问题是多少人感染了流感而没有发生严重疾病。
The question is how many other people contracted influenza but never got very sick.
他感染了致命的疾病以至于医生们束手无策。
He was infected with so deadly a disease that doctors were in complete doubt.
一旦农场饲养的禽类被感染了，该疾病会传播的更快。
Once farm birds become infected, the disease spreads quickly.
一旦农场饲养的禽类被感染了，该疾病会传播的更快。
Once farm birds become infected, the disease spreads quickly.
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