What if Ceres isn't CDC?
The only thing that Ceres has done that gives proof of his role claim is also something that can be done by a Mafia teammate.
Both AV and I have proof, within the powers of already established & known roles (Sheriff & Doc). AV with the investigation on jazz that was confirmed by Al, and my Doc save of AV which prevented an MK.
Ceres is asking us to believe that AV is Mafia with investigative powers, combined with the powers of PZ, and that Ceres is a CDC Doc who can investigate, self save, and create vaccines, and has a partner.