cnn's sara sidner spoke with exhausted workers at a hospital in santa fe. >> reporter: erica and jim, the staff at the biggest local hospital in santa fe thought they had finally gotten relief because of the vaccines and boosters. unfortunately, too many people aren't taking the vaccine and they're ending up filling up their covid-19 icu. in santa fe, new mexico, the annual holiday light display dazzles the eye and lifts the spirit. but these are the lights grabbing all the attention just down the road. this is a covid icu. suddenly as busy as it ever was. >> it is clinically psychologically impossible to keep doing this day in and day out, especially for the past year or two. even the strongest respiratory therapists i have have broken down at times. >> reporter: the staff is