The city and county of St. Louis are again requiring residents to wear face masks starting Monday because of increasing coronavirus cases, according to KMOV, a local CBS affiliate.
Why it matters: People must wear masks inside public places and on public transportation regardless of vaccinated status, and health officials recommend that masks be worn while outside in group settings.
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The big picture: St. Louis has reported 507 new cases, 545 hospitalizations and 5 deaths from the virus in the past 14 days, according to Missouri state data.
The Delta variant of the virus, which spreads more aggressively than other versions, has been detected in the city.
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