sent home and then wasn t admitted to the hospital until four days af the man was visiting family, and officials are g a close eye on everyoeen in contact wit i ha stop this in its tracks in the u.s. i also have no doubt as long as the outbreak continues in olaly bbreak continues in dirth so ectly s bodily fluids. that ebola patient in dallas travelled tom liberia which is ground zero for the latest outbreak. more than 3,000 people have been killed by the virus across that region. our own dr. richard besser was just there in the hot zone. this is the first time a journalist has been allowed into the ebola ward. feeling safer with each layer. reporter: layers and layers of o wh identify one another. reporter: dr. jerry brown a liberian surgeon. he prays every time before he goes into the ward. 60 people in a ward built for 40. the wards the u.s. is building