Hmm …

… Antibody tests suggest that coronavirus infections vastly exceed official counts. (Hat tip, Dave Lull.)

The Santa Clara team estimated an IFR for the county of 0.1–0.2%, which would equate to about 100 deaths in 48,000-82,000 infections. As of 10 April, the county's official death count was 50 people. The study's IFR is lower than the IFR used in models by researchers at Imperial College London, which estimated an IFR for Great Britain on the basis of data from China to be 0.9%. In another study, the same group later estimated an IFR for China of 0.66%, and a study of deaths on the Diamond Princess cruise ship estimated an IFR of 0.5%.