A coronavirus pandemic linkfest is now a weekly feature here on Abnormal Returns. Please stay safe. You can read last week’s edition here.

Quote of the Day

“The single biggest lesson I’ve learned during the pandemic is that epidemiological modeling struggles with prediction, because so much of it depends on human behavioral factors.”

(Carl Bergstrom, a biologist at the University of Washington in Seattle)

Chart of the Day

A lot more people are getting second vaccine doses.