The Swedish mirage: the verdict is already written
Kaiser asks whether we need more time to evaluate Sweden's approach to coronavirus.
Archive: 2020
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.
One-dose Pfizer is not happening and here's why
Kaiser explores what the Pfizer vaccine trial data say about a one-dose treatment.