Minister for Foreign Affairs Charlie Flanagan has advised people travelling to Brazil for the Olympics to follow local security advice in light of recent attacks in Nice and Munich.
Mr Flanagan said up to 1,000 Irish fans are expected to attend the Games and the primary concern is their safety.
He advised those travelling to Rio to download a new smartphone app called TravelWise to get the latest security and health updates.
There is to be a temporary consulate in Rio de Janeiro for the duration of the Games, along with a Garda officer working with the international police co-operation centre.
The Department of Foreign Affairs is advising women who are pregnant or trying to get pregnant to consider postponing their travel.
Those who are travelling are urged to take appropriate care in protecting themselves from mosquitoes.
Minister Flanagan said 77 Irish athletes competing across 13 sports makes this the largest delegation since 1948.
The Games begin on Friday.