How mRNA vaccines can keep up with an ever-changing coronavirus

ozdigital/iStockBy DR. ABAMA RAMANATHAN, ABC News (NEW YORK) — As new COVID 19 variants are rapidly spreading across the world, vaccine manufacturers are preemptively finding ways to adapt to the emerging threats. Moderna announced Wednesday it had

There's leftover COVID-19 vaccine. So what do you do with it?

peterschreiber.media/iStockBy ADISA HARGETT-ROBINSON, ABC News (NEW YORK) — With COVID-19 vaccines having strict timelines for when they must be used before expiring, including some that must be used within hours of being mixed and thawed, having leftover