https://apnews.com/27594f1064d7b01f8497d597ff117219

Two COVID-19 vaccines might be nearing the finish line, but scientists caution it's critical that enough people volunteer to help finish studying other candidates in the U.S. and around the world.

Moderna Inc. and competitor Pfizer Inc. recently announced preliminary results showing their vaccines appear more than 90% effective, at least for short-term protection against COVID-19.