Challenging immunization efforts across the U.S. has led local and state officials to improvise strategies on how coronavirus vaccine doses are distributed.

In recent weeks, Health and Human Services Secretary Robert F. Kennedy Jr. has begun to dismantle decades of vaccine safety policies, sowing concern and confusion.

As a new variant that causes 'razor blade throat' spreads, the FDA updates vaccine warnings to include information on heart inflammation.

Kroger, the parent of King Soopers and City Market, announced June 20 that it will close 60 stores nationwide. Will any be in Colorado?

As the nation wrestles with COVID vaccine recommendations, a new study of half a million adults shows boosters still provide a lot of extra protection.

Wondering about the latest vaccine recommendations to protect against COVID-19? It's complicated.