period from 10 days to 5, making no mention of a negative test. drawing pushback from health experts and contradiction from the surgeon general. >> they have certainly received feedback and questions about the role of testing. >> reporter: as well as dr. anthony fauci. >> i'm saying it's something that absolutely should be considered and i believe the cdc is going to clarify that. >> reporter: they did. saying people can test if they want to. but if they test positive, they should isolate for five more days. the head of the american medical association says all of this is not only confusing but risking further spread of the virus. >> i think the problem here isn't so much the guidance. it's the lack of effective communication about the guidance. >> reporter: dr. tom frieden was cdc director under the obama administration. >> yes, there are some judgment calls. be frank about them. >> reporter: cnn learned dr. walensky is in media training. for months, meeting with a consultant to improve communication skills. today she held a rare solo news