‘Is it safe to have more than one type of COVID vaccine?’ and other questions answered by an immunologist | Gavi, the Vaccine Alliance https://www.gavi.org/vaccineswork/it-safe-have-more-one-type-covid-vaccine-and-other-questions-answered-immunologist?fbclid=IwAR0nYB1lNWVMyaxCHIhQ_6ft-Uuk-Uz66s9ugUgNr_PGmp55PCZeInVXJLg