Without masks and a vaccine, we could reach Herd Immunity from COVID-19, but deaths would skyrocket. We break down the science of it.


We are profoundly concerned that avoidable missteps could undermine the rollout of the COVID-19 vaccination campaign.

The COVID-19 pandemic — and its enormous social and economic consequences — poses the greatest threat to human health and welfare of our lifetimes.

The fields of medicine and biomedical science to which we have devoted our careers are the most effective means to counter this scourge. Alongside preventative public health measures and treatments for the infected, developing a safe and effective vaccine to ward off SARS-Cov-2 infection is a critical national priority.

Urgency has motivated progress with