ATLANTA (REUTERS): U.S. health officials said on Tuesday they are monitoring 76 people who may have come into contact with Ebola patient Thomas Duncan after he was hospitalized in Dallas.

The additional monitoring followed confirmation that a nurse caring for Duncan became infected with the deadly virus.

The U.S. Centres for Disease Control had already been tracking 48 people who may have had direct or indirect contact with Duncan before he was admitted to the hospital.