The Norwegian Medicines Agency said on Saturday that there had been four new cases of severe bleeding in adults after receiving the vaccine.
The Irish National Vaccination Advisory Committee (NIAC) issued the guidance as a warning although it has not been “determined that there is any link between the AstraZeneca vaccine and these cases,” it said in a statement.
The Irish NIAC is expected to meet again Sunday to further discuss the vaccine ban, he said.
Austrian health authorities were the first to warn of the potential dangers of the vaccine, canceling one batch of doses.
Italy on Friday banned the use of vaccines from a special batch of AstraZeneca doses following the death of a serviceman in Sicily, who had died of a heart attack one day after receiving the first dose of the vaccine.
However, Denmark on Thursday became the first European country to temporarily suspend the distribution of the AstraZeneca vaccine.
The European Union’s medicines regulator, the EMA, is currently investigating whether the picture could be linked to several reports of blood clots.
The EMA has stated that the benefits of the AstraZeneca vaccine outweigh the risks, and has not recommended discontinuing use.
“There is currently no indication that these conditions were caused by a vaccine, which is not listed as a side effect by this vaccine,” the EMA said in a statement Thursday.
To date more than 110,000 doses of the AstraZeneca vaccine have been given in Ireland, making up about 20% of all doses in the country according to state broadcaster RTÉ.
CNN has reached out to AstraZeneca for comment.
Niamh Kennedy reported from Dublin and Lindsay Isaac reported from London.