Nurse’s union boss: We will not reach herd immunity by September A nurse’s view on the COVID-19 vaccine roll-out. Malta Union of Midwives and Nurses president, Paul Pace answered MaltaToday’s questions on the vaccination roll-out 26 January 2021, 7:13am by Laura Calleja MUMN President Paul Pace at a press conference at the beginning of the COVID-19 pandemic in 2020 Malta began rolling out the Pfizer COVID-19 vaccine on 27 December – starting first with healthcare professionals, and residents of care homes, expanding now to over 85s. However, the health authorities have received criticism from unions about the slow roll-out. Health Minister Chris Fearne has told Euronews that Malta is looking to vaccinate 70% of the population by the end of September, with a closer objective being to vaccinate medical workers and all those over 80 years of age by March.