Cutting infection rate by half is not the same as protecting half the people from infection
Kaiser explains what 50% vaccine efficacy actually means, and it's not what you think.
Kaiser Fung
The Swedish mirage: the verdict is already written
Kaiser asks whether we need more time to evaluate Sweden's approach to coronavirus.
I don't like the term herd immunity
Kaiser explains why the term "herd immunity" is problematic
Bloomberg made me digest these graphics slowly
Kaiser enjoys reading the graphics in the Businessweek issue on elections.
Dr. Backlog jumps the pond
Kaiser investigates the official reason for U.K. under-reporting of coronavirus cases.
A testing mess across the pond
Kaiser takes a glance at the A-Levels controversy in the U.K.