Current COVID-19 vaccines have over a ________blank success rate in preventing severe forms of COVID-19.

Name: Current COVID-19 vaccines have over a ________blank success rate in preventing severe forms of COVID-19.
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Current COVID-19 vaccines, particularly the mRNA vaccines like those from Pfizer-BioNTech and Moderna, have shown over a 90% efficacy rate in preventing severe forms of COVID-19 in clinical trials and real-world studies.

Current COVID-19 Vaccines Have Over a ________Blank Success Rate in Preventing