The first health care workers in Westchester are beginning to receive COVID-19 vaccines.

Phelps Hospital in Sleepy Hollow administered the first shot in all of Westchester County - about 50 shots were administered. 

Dr. Lisa Geller, who's been an ER physician for 20 years, was first in line.

"It's a big relief I think to everyone who works in the hospital because it's been a stressful year," she says. 

St. John's Riverside Hospital in Yonkers also administered about 40 shots to its nurses and doctors.

New York-Presbyterian, St. Joseph's and Westchester Medical Center say they're expecting to receive their shipment of vaccines later this week.

Those who got the vaccine Monday need to have a second dose in about three weeks.

Priority for the vaccine among health care workers will be determined by position - so ER personnel goes first.