The first COVID-19 vaccine will likely require two shots

Pfizer / BioNTech and Moderna’s COVID-19 vaccines have a lot in common: they are both highly effective in clinical trials, they are both gene-based vaccines, and each also requires two doses. That last point is pretty standard for vaccines. “If you look at all the FDA approved vaccines, the vast majority will require multiple doses,” … Read more

The COVID-19 vaccine is highly effective, reports the manufacturer

A COVID-19 vaccine candidate was 90 percent effective at protecting people from the coronavirus, manufacturers Pfizer and BioNTech said on Monday. The Food and Drug Administration (FDA) previously said it would require any vaccine to be at least 50 percent effective to be approved. “If that headline really number really holds up, that is huge. … Read more