In mid-September, King County, Washington, in which Seattle is located, released an eye-popping slide about vaccine efficacy and breakthrough prevalence: Vaccines had reduced the risk of infection from COVID sevenfold, county data showed, and reduced the risk of hospitalization and death 41-fold and 42-fold, respectively. ...But in small type, King County included some other data that paint what seems at first blush like a very different picture: Fully 25 percent of deaths were among vaccinated people, the county reported. How can this be?... The answer is actually quite simple: the overwhelming age skew of the disease... ...All else being equal,...
