How much do we trust the CDC?
Probably a little more than most government agencies, but it’s still THE GOVERNMENT
Will the head of the CDC say what Obama wants him to say?
Yes, absolutely the head of the CDC will say whatever Obama gives permission to say. It is a very PC entity, and has been from the get go.
When I was a young biology major at Emory in the 70’s, I thought working there would be a dream job. As I worked my way up the ladder through lab jobs at the Med school, I learned otherwise. Even though there are some very good scientists there, politics is there, too, as in most any organization. A friend of mine worked there, and he was pretty stressed out most of the time. He was in his mid 40s and a very nice guy, but you could feel the stress every time we talked about how his work was going.