The National Immunisation Advisory Committee (NIAC) is expected to recommend the use of the Johnson & Johnson vaccine for those aged 50 and older in Ireland.
However, it could also be used for younger people if there is no option of another vaccine, and for those who live in hard to reach communities.
The NIAC advice will be considered by the Chief Medical Officer, Dr Tony Holohan. He will give his view and advice on it to the Minister for Health.
The Government will then advise the Health Service Executive on how it should proceed with the vaccine. Last week, the European Medicines Agency (EMA) said that the benefits of the Johnson & Johnson Covid-19 vaccine outweigh the risks.