Becker Friedman Institute: The backward art of slowing the spread.
“…Micro evidence contradicts the public-health ideal in which households would be places of solitary confinement and zero transmission. Instead, the evidence suggests that “households show the highest transmission rates” and that “households are high-risk settings for the transmission of [COVID-19].”32 Schools, businesses, and other organizations implemented a range of prevention protocols – from adjusting airflow to installing physical barriers to monitoring compliance to administering their own testing services – that households did not, and perhaps could not. Something in these organizations greatly reduced the spread, as suggested most clearly in the infection-source data from hospitals and health clinics as well as prevalence data from meat-processing plants.”