How many is many? What does the science tell us about the percentage of recovered patients who suffer long-term impairment?

Pandemic control measures such as mask wearing and social distancing can be helpful to "flatten the curve" on a temporary basis but are obviously not sustainable and won't be sufficient to eradicate the virus. SARS-CoV-2 is now endemic and will be with us essentially forever, even after a vaccine is developed. People need to think about what can work over longer time frames while objectively weighing both costs and benefits.