RT @ECDC_EU: Do you know what the 3 phases of clinical trials to test vaccines in humans are?
Learn in YOUR language how vaccines are approved in the EU at the European Vaccination Information Portal 🇪🇺
https://vaccination-info.eu/en/vaccine-facts/approval-vaccines-european-union
#EUVaccinationPortal #vaccineswork
🐦🔗: https://n.respublicae.eu/EMA_News/status/1658757920899710977