Second of three parts.
On May 13, the Centers for Disease Control and Prevention announced that people vaccinated against the coronavirus are safe to go without face masks in most cases. That set off a round of debate: Should we abandon all mask mandates? Is the CDC crazy, especially with the Delta variant spreading?
About six weeks later, the World Health Organization urged even fully vaccinated people to continue wearing masks and practicing COVID-19 safety measures such as social distancing. The debate raged on.