HAZARD, Ky. (AP) - Centers for Disease Control and Prevention Director Tom Frieden told reporters in Kentucky on Tuesday that it's impossible to know yet whether a drug being used to treat Ebola patients in Atlanta saved them.
The treatment is called ZMapp and was developed by a San Diego company using antibodies harvested from lab animals injected with parts of the Ebola virus. Tobacco plants in Kentucky are being used to make the treatment.
Frieden was in eastern Kentucky for a regional health symposium.
He told reporters all medicines have risks and benefits and that until there's a study, it won't be known whether the treatment helps, hurts or has no effect.
An American doctor and an American aid worker who worked together in Liberia are being given the experimental treatment in Atlanta.
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