Mask mandates and other lockdown policies reduced the spread of COVID-19 in america
Confronted with COVID-19, people rationally and voluntarily react to information on risks, rendering it difficult to distinguish the result of containment policies from that of voluntary behavioural responses. This column examines the result of mandatory mask policies on COVID-19 cases and deaths in america. If the united states had on 1 April 2020 universally mandated that employees of public-facing businesses use masks, there might have already been nearly 40% fewer deaths by the beginning of June. Containment policies had a big impact on the quantity of COVID-19 cases and deaths, directly by reducing transmission rates and indirectly by constraining people’s behaviour, and take into account roughly half the observed change in the growth rates of cases and deaths.