jab would still not come close to being a universa
While a pan-betacoronavirus jab would still not come close to being a universal coronavirus vaccine – it would still leave the other three groups of coronaviruses, alpha, delta and gamma, untargeted – it is still an incredibly challenging goal. To illustrate the sheer scale of the task, there are thought to be thousands of as-yet undiscovered betacoronaviruses residing within more than 400 different bat species.