Public Attitudes

The summer travel season was a blockbuster. Even cruise ships — derided as floating Petri dishes early in the pandemic — were filling up with eager passengers.

Most Americans want to get back to normalcy and are unwilling to let Covid rule their lives any longer, Dr. Ashish Jha, the White House Covid response coordinator, said in an interview. “Those two sets of goals are achievable,” Dr. Jha said, so long as Americans keep getting vaccinated, test when necessary and wear masks in crowded public settings.

Masks have been a cultural flash point since the start of the pandemic, and mask mandates in schools have been especially incendiary. Critics have argued that there is no strong evidence to prove that masks slow the spread of Covid, and that in any case children weren’t wearing the right kinds of masks or weren’t wearing them properly.

Now a research paper details a so-called natural experiment that occurred when all but two school districts in the greater Boston area lifted mask requirements in the spring. Researchers took that opportunity to make a direct comparison of the spread of Covid in masking and non-masking schools.