Vaccinated passengers will be allowed skip quarantine within days

It's after new advice from the country's top public health official. 

The quarantine booking site has reopened overnight, two days ahead of schedule, after contractor Tifco said it could open 300 more hotel rooms in time for Saturday night.

EU diplomats in Dublin have raised a joint protest over being added to the hotel quarantine list, and the European Commission's now opened an inquiry. 

Brussels wants to know how exactly Ireland has chosen what countries to restrict travel from. 

Italian Ambassador to Ireland Paulo Serpi says the quarantine is "discriminatory". 

"When you close borders or imposed limits, there must be serious and good reasons. I laid out our national focal points to Minister Donnelly to clarify in the best possible way, in the quickest possible time our hopes that this measure is revoked as soon as possible."