Do CDC agents carry guns?

yes they carry guns because they are federal law enforcement

It depends on the state and its local laws. As a general rule, a person cannot carry a gun legally unless the person has a gun permit or is a commissioned officer of some sort.

the Glock 22 (.40 cal) and Glock 27 (.40 cal) i believe they get those at their departure from the academy

The FBI use a Glock 22,23 as a side arm , a Glock 26 as a backupThe CIA use Glocks, as well as P226, P228, P229 Standard/DAKs and M1911 (The modern version)

most federal agents carry a .357 Sig Sauer... but it can vary some depending on department, region and assignment