The World Health Organisation is calling for countries to stop giving booster Covid vaccines to healthy people.
Over-60s and healthcare workers in Ireland are continuing to receive third doses this weekend.
But the WHO says boosters should only be given to immunocompromised people, because of a severe lack of vaccines currently available in developing countries.
Director-general Tedros Ghebreyesus says poor countries are lagging behind in their vaccination programmes – because richer countries are stockpiling vaccines: