epa10234371 Syringes containing the new Moderna Spikevax mRNA COVID 19 vaccine are prepared for use at the centre of the Geneva University Hospitals (HUG), that opened for the public to get the forth booster dose againt COVID, in Geneva, Switzerland, 10 October 2022. The forth dose booster is available for all persons with the new Moderna Spikevax mRNA COVID-19 vaccine.  EPA/SALVATORE DI NOLFI