SARS-CoV-2, shown here in green, mutates readily to produce seemingly endless new variants. This vaccine offers the hope of protecting us from all of them. Image credit: National Institute of Allergy and Infectious Diseases/NIH via Flickr (public domain) Universal vaccines offer the hope of future-proof disease prevention, protecting us against the diseases we’re facing now and their future evolutions in one fell swoop. New trial results show how this vision is slowly becoming reality, with a fu