I highly recommend this

It ' s a primer on epidemiology as applied to Covid-19, with interactive simulations.It shows what happens if we do nothing, and if we take various measures against transmission, and it adds important concepts one at a time. There ' s a lot to take in but it ' s all made very clear and presented so you can grok one idea before you move on to the next.One of the most important things to take away is that it matters how fast we get to herd immunity. Assuming there ' s no vaccine, that ' s the only realistic way out. (A permanent regime of testing and contact tracing is possible, but not much fun and it means people are still getting sick and dying, just at a low rate.) Even with that, assuming immunity is not life-long, there will be a steady but fairly low rate of infection -- i.e. the disease becomes endemic -- but we can live with that if we have to, it won ' t overtax the health care system.But -- if the prevalence at the time herd immunity is reached is high, there will be what ' s called overshoot. There will be so many infected people that even with the reproductive rate less than one, lots of the previously uninfected people will be exposed. If the prevalence is low, however, the overshoot will be less and fewer people will get sick and die -- even if we never get a vaccine. The  way to have prevalence low at the time herd immunity is reached is to slow down the epidemic, by the kinds of measures we ' re taking now.Also: No, obviously we can ' t continue in the ful...
Source: Stayin' Alive - Category: American Health Source Type: blogs