Pfizer bivalent COVID-19 booster vaccine highly effective, study says - UPI.com A new study examining the effectiveness of the new Pfizer bivalent COVID-19 booster vaccine determined it is highly effective in reducing hospitalizations and deaths. UPI

The research found that, compared to people in this age group (65 and older) eligible to receive the bivalent booster, but did not, those who got it had a 72% lower risk of COVID-19-related hospitalization. It also discovered that 68% had a lower risk of COVID-19-related death.