The Health Service Executive has stated that there may not be enough doses to meet the demand for Johnson & Johnson vaccines for the 18-24-year-olds who have registered to receive it.
This follows an announcement made yesterday that those aged 18-24 can opt-in to receive the single-shot J&J vaccine in pharmacies from the 5th of July.
This age group can also register for the AstraZeneca vaccine at a vaccination centre from the 12th of July or wait to receive an mRNA vaccine such as Pfizer or Moderna when their age cohort becomes eligible.
Certain pharmacies had to close down their bookings for Covid-19 vaccines as all available appointments were booked following non-stop phone calls from people requesting an appointment.
This led to multiple cancellations, with people who made an online booking with Boots being later informed via text message that their appointment had been cancelled.
HSE Chief Clinical Officer Dr Colm Henry stated that there are currently 50,000 J&J vaccine doses in the system and another 80,000 that will be distributed in the coming weeks.
He added that these doses will be distributed based on demand from individual pharmacies and geographical areas but that there may not be enough doses to meet the demand.
He encouraged people who are registering for the J&J vaccine, to do so at their local participating pharmacy and to only register at one location.