The new Centers for Disease Control and Prevention (CDC) COVID-19 guidance is the agency acknowledging it was wrong in the past to downplay natural immunity and promote unprecedented policies like asymptomatic testing, a California epidemiologist says. The new guidance, released on Aug. 11, rescinds and alters a number of key recommendations, including treating unvaccinated and vaccinated people differently for many purposes, explicitly stating that people with previous infection have protection against severe illness, and removing six-foot social distancing advice. “The CDC is admitting it was wrong here, although they won’t put it in those words,” Dr. Jay Bhattacharya, professor of...