题目

People in theUS thought Ebola was only a disease, accompanied with fever and found in Africa at the beginning.   36   then a man from west Africa died from Ebola at a hospital in Dallas, Texas. And two nurses   37   for him became infected(感染) with the virus, which made the US government publish new guidelines to   38   health workers． Top American   39   have repeatedly said that most people have little chance of being infected．Experts have   40   that Ebola can only be spread through infected person’s body fluids — like blood．But it   41   many A侥幸逃脱；逃离________