Sorry about the confusion. You are correct that the more people who are infected the more vectors there are for the infection to spread. No matter where the vector is coming from. Spreading through the healthcare system is particularly troubling. This is where people with other health problems go for care. Go in with a heart attack and get a bonus of COVID. Not a good combination. Here it can be Dengue and COVID. The two would be enough to incapacitate most young people. All the more evidence that shows the only way to control the spread is to control the spread through all potential carriers including young people who have minimal chance of being severely hurt by COVID. So far the idea that only the at risk population needs to be isolated has been thoroughly debunked. Maybe @Rye83 or someone else will put forth some measurable historical evidence that attempts to support the idea of only isolating at risk populations.