The majority of Americans dying from Covid are vaccinated for the first time ever. An analysis of official data found that 58% of Covid deaths in August were in people who were vaccinated or boosted. Experts caution this is always expected because such a large majority of the population has received at least the standard two-dose regimen. Those more likely to die from Covid, for example the elderly and immunosuppressed, are also more likely to be vaccinated, further skewing the ratio. But it is also true that as Covid has mutated, the vaccines have become less effective — with regular...