I agree being able to deploy a vaccine in record time is very impressive. I think an interesting thought experiment would be: take the modern COVID strain and

I agree being able to deploy a vaccine in record time is very impressive. I think an interesting thought experiment would be: take the modern COVID strain and go back to the 1900~'s UK/America? (That's where most the site is from as far as I know) Just the massive lack of co-morbidities (Diabetes, heart disease, obesity, cancer) and demographic differences (Average age was far lower, population density) could make it an almost a non issue.