The Chief Medical Officers in Ireland and Northern Ireland, Dr Tony Holohan and Sir Michael McBride, have issued a warning to anyone that plans on crossing the border.
During a recent meeting, both CMOs discussed the evolving profile of Covid-19 on the island.
Following the meeting, the Chief Medical Officers are reminding people who are intending to travel across the border over the coming days to be alert to the epidemiological situation in the relevant locality.
People are also being asked to ensure that they avoid activities that could place them or their families at risk of infection.
In particular, the CMOs highlighted their growing concern with regard to the Delta variant and advised that everyone should remain careful and continue to follow the public health advice.
A statement from the Department of Health said: "Now is a time for continued caution in order to maintain the progress made to date in each jurisdiction until more people are fully vaccinated. People who are not yet protected through vaccination should remain extra vigilant, avoid crowds or large events, meet up with others outdoors where possible and come forward for testing if they develop any symptoms of Covid-19."
Earlier this evening, the Department of Health confirmed 393 new cases of Covid-19 in the Republic.
Of these people, 48 are in hospital with 14 patients in ICU.
