Cause-effect Open questions of the pandemic, part 3 Kaiser posts another pair of questions, showing that we don't have answers for basic questions about the pandemic.
Covid-19 Common misreading of data with time lags Kaiser reminds you that the media told us Delta was less severe, and they got it wrong.
Assumptions Blood clots: is there a there Kaiser looks at the controversy over blood clots and the Astrazeneca vaccine.
Chapter 2 Eight unanswered questions about the coronavirus Kaiser Fung discusses eight unanswered questions about the coronavirus.