RedDenver
New member
It's possible that a vaccine won't work, but it's also possible a vaccine will work to trigger a sufficient immune response while getting the virus may not.So why is the entire world busy developing a vaccine? A vaccine is intended to speed up herd immunity. If there is no immune response, there is no chance that a vaccine can even work.
Some coronaviruses in the past have resulted in no herd immunity while others have. In particular the coronaviruses that were more severe like SARS and MERS produced strong immunity that lasted for years while less severe ones had immunity that only lasted a few months. I'll try to find the article I read that describes this.