Elderly people in France will only be permitted to travel if they have a Covid booster jab, from next month.
French President Emmanuel Macron said over-65s need to show proof of a booster injection to continue using the health pass, which allows travel and entry to restaurants and museums.
It takes effect on December15.
"We have not finished with the pandemic. Immunity decreases and therefore the risk of developing a serious form of Covid increases. The solution is an additional vaccine shot," Macron said.
Macron said more than 80% of Covid patients in intensive care units were aged over 50, as immunity protection wanes.
France yesterday reported 12,000 new confirmed cases, which is the highest since late summer.
The health pass is required to travel by train and plane.
According to government spokesman Gabriel Atta said passes for over-65s will automatically be deactivated six months and five weeks after the second dose.
Other groups eligible for a booster shot include health workers.
In December booster jabs will be extended for those aged between 50 and 64.
