How Rapid Reinfection Has Changed the Covid Fight
Almost since the beginning of the Covid-19 pandemic, epidemiologists, policymakers, science journalists, and many more have held onto two general assumptions that give them hope: that eventually enough people might develop immunity to Covid-19 to slow down transmission and that even if Covid doesn’t fade away, it might become a more seasonal illness, like respiratory viruses such as the flu, RSV, and other bugs—even other coronaviruses. But now, as cases rise steeply and summer approaches, Covid is again taking us by surprise. Читать дальше...