Saline injection as placebo comparator clinical trials

CONCOMITANT ADMINISTRATION OF LICENSED VACCINES AGAINST COVID-19 AND FLU WITH OR WITHOUT MF59 ADJUVANT: A MULTI-CENTRE, RANDOMIZED, SINGLE-BLIND CLINICAL TRIAL TO ASSESS IMMUNOGENICITY IN ADULTS AGED 65 AND OVER

This study looks at giving COVID-19 and flu vaccines at the same time to people aged 65 and over. We want to see how well their bodies respond to both vaccines and if it's safe to have them together. This could make it easier for older adults to stay protected.