The percentage of Americans who are smokers has fallen to an all-time low, now representing just 17.8 percent of the population, a study released Tuesday found.
The U.S. program that requires weeks of monitoring for travelers from African countries with Ebola reaches the one-month mark Thursday. And so far, no cases of the disease have turned up.
The European Commission called for 5,000 doctors to be sent from EU states to combat west Africa's Ebola epidemic, a European source with knowledge of the matter said on Wednesday.
Ethiopia is attempting to set a world record for the number of HIV tests carried out in one day.