Greece has decided to make vaccination mandatory for people over the age of 60, as coverage remains below the European Union average and a recent rise in infections has put pressure on hospitals.
Seniors who will not be vaccinated will face penalties, starting with a fine of 50 euros ($ 57) in January and then with a monthly fine of 100 euros ($ 114).
About two-thirds of Greece's 10.7 million population is currently vaccinated - the EU average is just over 70%.
The rate of deaths and daily hospitalizations has increased since the recent spread of the omicron variant, although pressure on ICU capacity has eased slightly.
Health Minister Thanos Plevris said the fines would be collected through the tax office with money to be used to help fund state hospitals.
"The age factor is important because of its impact on the public health service," Plevris said.
A vaccination mandate was set for health care workers last year. And starting February 1, adult immunization certificates will expire after seven months, unless the holder receives a booster vaccine.
The new infections increased significantly in early January and have eased over the past week.21Media