The HSE says the next 7 to 10 days are crucial in the fight against the spread of COVID-19.
More restrictions may be necessary if the rise in the number of cases in Ireland doesn't start to level off.
There are now 557 cases in Ireland, after 191 new ones were confirmed last night, along with a third death.
The HSE's Chief Clinical Officer Colm Henry says people who don't follow the guidelines are endangering others.
