
Sources:
https://www.independent.ie/irish-news/news/covid-19-people-may-need-to-get-fourth-vaccine-dose-warns-tanaiste-41131636.html
https://www.theatlantic.com/family/archive/2021/12/covid-booster-fully-vaccinated-omicron/620916/
Sources:
https://www.independent.ie/irish-news/news/covid-19-people-may-need-to-get-fourth-vaccine-dose-warns-tanaiste-41131636.html
https://www.theatlantic.com/family/archive/2021/12/covid-booster-fully-vaccinated-omicron/620916/