In this picture taken on Tuesday, Dec. 29, 2020, health workers wheel out a patient from an ambulance, at the entrance of the University Clinic complex in Skopje, North Macedonia. When thousands of people across the European Union simultaneously began rolling up their sleeves last month to get a coronavirus vaccination shot, one corner of the continent was left behind, feeling isolated and abandoned: the Balkans. (AP Photo/Boris Grdanoski)

In this picture taken on Tuesday, Dec. 29, 2020, people and health workers are pictured in front of the entrance of the University Clinic complex in Skopje, North Macedonia. When thousands of people across the European Union simultaneously began rolling up their sleeves last month to get a coronavirus vaccination shot, one corner of the continent was left behind, feeling isolated and abandoned: the Balkans. (AP Photo/Boris Grdanoski)