Immunologists and doctors say they are hopeful the Johnson & Johnson Covid-19 vaccine will be approved for use in Ireland across a broad range of age groups.
The National Immunisation Advisory Committee is continuing to consider what recommendation it will make on the single dose jab.
The roll-out of the vaccine was paused in the European Union and the United States due to rare cases of unusual blood clots among six out of 6.8 million people in the US who had received the vaccine.
Earlier this week, a safety review by the European Medicines Agency found that while there is a possible link with blood clotting events, the benefits of the Johnson & Johnson jab - marketed as Janssen in the EU - outweigh the risks.