The doctor leading the fight against the world’s deadliest Ebola outbreak in Sierra Leone has contracted the virus, according to government officials. Sheik Umar Khan has been admitted to a hospital in the Eastern province of Sierra Leone and is…

The Ebola virus was detected in samples of a viral hemorrhagic fever that has killed more than 50 people in the West African nation of Guinea marking the first human outbreak of Ebola in the country, according to government officials…