Keywords:
Adaptive platform trial; Booster vaccination; COVID-19; Immunisation; Pandemic; Policy; Vaccination
Abstract:
The need for coronavirus 2019 (COVID-19) vaccination in different age groups and populations is a subject of great uncertainty and an ongoing global debate. Critical knowledge gaps regarding COVID-19 vaccination include the duration of protection offered by different priming and booster vaccination regimens in different populations, including homologous or heterologous schedules.