People aged 60 to 64 can now book their coronavirus jab at one of seven regional centres across Northern Ireland.
The Department of Health revealed the latest extension on Monday, March 1, urging all those who are included in the age group to book online.
It follows the recent roll out to adult carers.
A total of 558,597 doses of the vaccine have now been delivered in Northern Ireland, with 33,197 people having received their second doses and 525,400 their first.
To make an appointment following this latest extension you should visit Department of Health's online portal: COVID-19 Vaccine Service for NI (hscni.net)
A spokesperson said: "The online platform is the primary source to book an appointment and should be used in the first instance.
"A telephone booking system is also available should you not have access to the online portal. Telephone 0300 200 7813. The phone line is open Monday to Friday from 8.30am to 5.30pm.
"Anyone attending a vaccination centre can be assured that social distancing and other Covid safety rules are strictly applied.
"People must get their first and second doses from the same provider – they must not try to “mix and match” between GPs and vaccination centres."
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