ViewpointsOpinionWhat Made COVID-19 Vaccines ‘Safe and Effective?’With any new technology, there may be new risks, some of which might be ‘unknown unknowns.’SavePrintSyringes with Moderna's COVID-19 vaccine sit on a tray in a vaccination center in London on Dec. 4, 2021. Daniel Leal/AFP via Getty ImagesClare Pain11/3/2023|Updated: 11/7/20230:00X 1CommentaryI am an Australian medical journalist with over a decade’s experience, who is also a UK citizen.Share this articleLeave a commentClare PainAuthorClare Pain is an Australian medical journalist from the UK with a background in medicine, science, and statistics.Related Topicsvaccinationgene therapyCOVID-19COVID-19 vaccinecovidmRNA technology