Ebola and 'Contact Tracing'

Posted: Jul 17, 2015 3:54 AM ET

Ebola and 'Contact Tracing'6:50

Officials in Nigeria are scrambling to identify and locate people who may have come in contact with a carrier of the Ebola virus. The method they are relying on is called 'Contact Tracing'. Infectious Disease expert David Heymann explains.

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