The Chief Medical Officer Dr Tony Holohan has urged people to wear masks rather than face visors due to their reduced effectiveness.
Dr Holohan appealed directly to retail workers in particular as visors have been used as an alternative where staff have to wear face coverings for long periods of time.
Research has shown that visors are not as effective in suppressing the spread of the virus, with Dr Holohan saying anyone who can wear a mask, as opposed to a visor, should do so.
The CMO also praised the commitment of the Irish public to stamping out Covid-19.
Yesterday, 335 more people tested positive for the virus, the lowest number in one day since late September, while five more deaths were also recorded.
Professor Anthony Staines of DCU says case numbers could be down to the dozens by the end of the month but could bounce back very quickly.
"It's still good news but it doesn't get us away from the questions of what we do when it comes to December.
"We may be at 50 cases a day, even fewer, by the end of November, but unless we have a plan to do something effective about it we will be back at 500 cases a day probably by the middle of February or early March."
