Cox defeated Hogan-backed Kelly Schulz in the Republican primary race for governor.
Hogan has resisted calls to release $3.5 million in funding that would increase abortion care in the state.
The bills were originally passed this year.
Masks will still be required inside public transportation, health care settings and schools.
The state will continue to prioritize people who are currently eligible for vaccines but have not yet received them.
The Six Flags in Bowie is among the new sites.
"It is absolutely critical that we continue to fight this virus with everything we got.”
State officials are hoping to bring on several thousand new hospital workers in the coming weeks.
Experts say this trend isn't reassuring.
The governor also honored the life of George Floyd at Wednesday's press conference.