An American doctor and a U.S. missionary who had been battling West Africa's Ebola epidemic have fallen sick with the disease in Liberia.
The death toll numbers are up from the deadly disease and the number of cases has surpassed 1,000.
The Centers for Disease Control and Prevention is now running tests on six forgotten vials of smallpox recently discovered in an unsecured laboratory.
Even though smallpox has been eradicated, the world's remaining stockpiles should not be destroyed, scientists said.
A team of researchers has produced an experimental vaccine for the deadly H7N9 flu strain.
A U.S. study has found that cow manure, commonly used to fertilize vegetable crops, contains a high number of genes that can fuel resistance to antibiotics.
The disease is spread by direct contact with blood, feces or sweat, or by sexual contact or unprotected handling of contaminated corpses.
Ebola is one of the deadliest known viruses and there is no known cure. Continue reading →
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