Everyone over the age of 18 in Northern Ireland is now eligible for the Covid-19 vaccine.
Anyone under the age of 40 in the country can book a Pfizer vaccine starting on Thursday.
According to the Department of Health, around 20,000 spots will be available each week. The Pfizer vaccine has been rationed because medical officials said that under 40s should be offered an alternative to the Oxford/AstraZeneca vaccine, according to the department.