WHY DON’T WE ALREADY HAVE A CORONAVIRUS VACCINE?

https://www.youtube.com/watch?v=RJWeZyzOaOQ

WHY DON'T WE ALREADY HAVE A CORONAVIRUS VACCINE? Starting in 2003, after outbreaks of coronaviruses SARS and MERS, scientists began the race to create a coronavirus vaccine, so why don't we already have one? Top immunologist and microbiologist, Prof. Dolores Cahill, Phd, sheds light on why vaccine makers are struggling to produce a safe & effective product. #OperationWarpSpeed #Covid19 #Coronavirus #Vaccine #SARS #MERS #Truth

Original source: https://www.youtube.com/watch?v=RJWeZyzOaOQ