Two Americans now infected with Ebola in West Africa
Texas doctor and North Carolina aid worker test positive for deadly and incurable disease; situation getting "more and more scary," official says
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Texas doctor and North Carolina aid worker test positive for deadly and incurable disease; situation getting "more and more scary," official says
Passenger fell ill on a flight, possibly exposing many others before he died
More than 500 deaths in region that until now had never seen the disease; fear and panic have sent some patients into hiding
"Horror-movie" virus kills about 70 percent of its victims and makes vaccine research a challenge
Current Ebola outbreak is especially difficult because of the wide area over which it has spread