Adults seeking a booster measles vaccine can now visit their GP, the Flemish Department of Health announced on Wednesday.
A temporary restriction had been in place since July to ensure sufficient doses for young children's first vaccinations.
Priority is given to adults aged 30 to 39, born from 1985 onwards, as research shows this group is most likely to lack immunity against measles, according to department spokesperson Joris Moonens.
The measles vaccine was added to the vaccination schedule in 1985. Older generations generally contracted the disease naturally.
Measles cases are on the rise again in Europe. Data requested by Belga revealed that the number of cases in Flanders tripled by August. There were 35 cases in all of 2023, but by 7 August this year, there had already been 111 cases.
Measles is highly contagious. Symptoms range from characteristic red spots starting behind the ears and spreading across the body to high fever, coughing and a runny nose. Complications from measles can include pneumonia and encephalitis.
