The Centers for Disease Control and Prevention Director Dr. Rochelle Walensky signed off on newly-updated COVID-19 booster shots Thursday night, giving the final clearance shots to be administered soon after.
The Biden administration is aiming for a mid-September rollout for reformulated Pfizer and Moderna COVID-19 booster shots, after both companies promised they would be able to deliver doses by then, according to the New York Times, citing people familiar with the deliberations.
BA.5 more easily transmits and escapes immunity, leading many to call it the "worst version" of omicron yet. Breakthrough hospitalizations are rising, too, but it might not just be the variant causing the spike
Several highly effective vaccines were developed at an unprecedented speed to combat the COVID-19 pandemic. During the phase 3 clinical trials, mRNA vaccines had vaccine efficacy of 94–95% in preventing symptomatic infections