Vaccine fatigue is real. These experts say messaging on COVID boosters should be clear

COVID-19 vaccines aimed at both the original strain and Omicron variants are expected in Canada this fall. But messaging on booster doses has been mixed across the country. Some experts like virologist Angela Rasmussen recommend getting the first available booster, while others like Manitoba's Chief Provincial Public Health Officer Dr. Brent Roussin say his province will wait to open up fourth doses for all adults until new bivalent vaccines are approved.