- Apr 24, 2020
An outbreak can't burn itself out without acquired immunity. People recovering and outbreaks receding are both substantial evidence that acquired immunity works with sars-cov-2 the same way as most other viruses. It's not HIV spread by breathing. How long the immunity lasts it's something to question, but the only research I've seen suggest a short duration was a small study done specifically on asymptomatic carriers that only concluded that antibodies were less likely to be detected after 2 months, and larger studies have contradicted that.Assuming acquired immunity, of course. Unfortunately, that's currently in question. Getting the coronavirus once may not actually mean you can't get it again. Also trying to do this without vaccines or quarantine and social distancing measures means that a lot more people have to get sick and die before an equilibrium is achieved. People tend to throw around the phrase "herd immunity" not only without properly understanding what that means in a medical context, but also not realizing that we already have several large-scale examples of what happens when an outbreak is left to burn itself out. Just ask the Native Americans.