This week, President Donald Trump called Operation Warp Speed, a public-private federal program that helped speed up the development and distribution of mRNA Covid-19 vaccines in record time “one of the most incredible things ever done in this country.

His claim is contradicted by scientific evidence. Countless studies show that vaccinated individuals fare far better against COVID-19 infections than those who are unvaccinated, while others have estimated that COVID-19 vaccines prevented millions of deaths during the global pandemic.