French authorities said they will prioritize the elderly, based on the virus's deadly impact on older people in previous virus surges in France. The French medical safety agency will monitor for any potential problems.

Germany, where the pandemic has cost more than 30,000 lives, will begin with those over 80 and people who take care of vulnerable groups.

Spanish authorities said the first batch of the vaccine to reach the country had arrived in the central city of Guadalajara — where the first shots will be administered on Sunday morning at a nursing home.

In Italy, which has Europe's worst virus death toll at over 71,000 people, a nurse in Rome at Spallanzani Hospital, the main infectious diseases facility in the capital, will be the first in the country to receive the vaccine, followed by other health personnel.

In Poland, the first two people to be vaccinated on Sunday will be a nurse and a doctor at the Interior Ministry hospital in Warsaw, the main coronavirus hospital in the capital, followed by medical personnel in dozens of other hospitals.

Polish Prime Minister Mateusz Morawiecki called it the patriotic duty of Poles to get vaccinated — a message directed at a society where there is a high degree of vaccine hesitancy born from a general distrust of authorities.

In Bulgaria, where vaccine hesitancy also runs high, the first person to get the shot will be Health Minister Kostadin Angelov, who has promised an aggressive campaign to promote the benefits of the shots.