Los Angeles County will again require residents to wear masks indoors regardless of vaccination statues starting this Sunday because of recent increases in new coronavirus cases and rising concerns over the Delta variant of the virus, according to KTLA.

Why it matters: The latest order from the most populous county in the United States comes after it reported 1,537 new COVID cases, an 83% increase over the last week.

Editor's note: This is a breaking news story. Please check back for updates.