In the realm of medical advancements, a universal vaccine that can protect against any pathogen has long been a Holy Grail—and about as elusive as a mythological vessel. But Stanford Medicine researchers and collaborators have taken an astonishing step forward in that quest, surprising even themselves.
Universal flu vaccines also work on mice. And these are generally tested on naive mice. Having a history of multiple infections/vaccinations, as adult humans do, changes the picture quite alot.