The HSE’s Health Protection Surveillance Centre has produced a range of guidance notes for COVID-19, including guidance for healthcare and non-healthcare settings. “Current recommendations for the use of Personal Protective Equipment (PPE) for Possible or Confirmed COVID-19 in a pandemic setting” contains guidance for healthcare workers on face coverings and physical distancing.
https://www.hpsc.ie/a-z/respiratory/coronavirus/novelcoronavirus/guidance/infectionpreventionandcontrolguidance/ppe/Current%20recommendations%20for%20the%20use%20of%20Personal%20Protective%20Equipment.pdf
The HSE is responsible for issuing the guidance to all healthcare settings.