Some of the world's leading vaccine experts from Melbourne, London and New Zealand have, this evening, been answering journalist's questions about how good the covid-19 Pfizer vaccine is and how to make sense of the data presented. They've been answering questions such as can any countries actually reach herd immunity and will we need booster shots in the coming months and years? One of those experts is University of Auckland Associate Professor, vaccinologist, Helen Petousis-Harris, who has kindly agreed to answer your questions too.
Photo: AFP
