PITTSBURGH, Pa. (SBG)—Researchers around the world are frantically working on a vaccine to combat COVID-19. But what if you could one day get that protection without a shot? One research team in Pittsburgh is working on a small skin patch it says has the potential to stick it to the coronavirus in an innovative way. Joce Sterman and Alex Brauer, Sinclair Broadcast Group. It’s a tiny flexible patch, as small as your fingertip.