Dr. Ronan Glynn:

W recognise that there may well be constraints in the establishment, setting up and expansion of this system. Therefore, we advise that in the first instance the focus should be on countries with known variants of concern, followed by countries or states with very high incidence, which is more than 500 cases per 100,000, followed by states with high incidence, which is less than 500 cases per 100,000 but more than two and a half times Ireland's 14-day incidence.