Vaccine doses are scarce across America as U.K. strain emerges

Florida governor Ron DeSantis said they aren't getting enough vaccine.

Vaccine super sites, like the one at Charlotte Motor Speedway, have helped drive efforts to distribute the vaccine.

The need is urgent: Other highly contagious strains have now been detected, and healthcare workers worry about receiving their second dose.

Nikkema Taylor, a healthcare worker, said is she feeling "so much frustration and so much anxiety, but I trusted the officials.

I was like, OK, I am a healthcare worker