People in theUSthought Ebola was only a disease, accompanied with fever and found inAfricaat the beginning. (1) then a man from west Africa died from Ebola at a hospital in Dallas, Texas. And two nurses (2) for him became infected(感染) with the virus, which made the US government publish new guidelines to (3) health workers．
Top American (4) have repeatedly said that most people have little chance of being infected．Experts have (5) that Ebola can only be spread through infected person’s body fluids — like blood．But it (6) many Americans are (7) what they have heard．
A recent survey found more than 80 percent of Americans believe that Ebola can be spread in many (8) , including air forced through the nose or mouth. The Harvard School of Public Health (9) the findings. The study also showed that most adults fear there will be a(n) (10) of Ebola in the United States soon.
(11) survey found that more than 70 percent of Americans would support calls to (12) travel to and from Ebola-affected parts ofAfrica.
Thomas Frieden heads the U.S．Centers for Disease Control and Prevention．When asked whether (13) officials had considered a travel ban, Mr．Frieden had (14) to say：“We won’t be able to check travelers for (15) when they leave or when they arrive. We won’t be able, as we do (16) , to take a detailed history to see if they were (17) when they arrive. When they (18) , we wouldn’t be able to impose quarantine（强加隔离）as we now can if they have high-risk touch.”
Last week, President Barack Obama urged Americans not to (19) what he called “ panic or fear ”.
This week，the administration announced that all travelers reaching the United States from some African nations are (20) to pass through one of five airports.