You have many questions. At first it seemed as if you were curious about what other aspects the CDC had delved into. Now it looks like you are pursuing some agenda. The basic questions can be answered with a bit of research. Here are some more to ponder. Or maybe these are what you are getting at.

What was the CDC's original mission?

Did it execute it competently?

Why is it now involved in areas other than communicable diseases?

Do people in organizations seek to increase their power and influence?

Do they do this by enlarging the scope of their organizations' missions?

How is this notionally science-based entity being influenced by other factors?