Dengue is the notable counterexample, but that seems unlikely to be an issue with COVID. AFAIK, it’s the virus’ behavior that matters, not the vaccine. https:/

Dengue is the notable counterexample, but that seems unlikely to be an issue with COVID. AFAIK, it’s the virus’ behavior that matters, not the vaccine. https://en.wikipedia.org/wiki/Dengue_fever#Vaccine https://en.wikipedia.org/wiki/Dengue_fever#Vaccine