Article By Rong-Gong Lin II, Luke Money. 'A man wears a mask July 12 in Union Station in downtown Los Angeles. (Irfan Khan / Los Angeles Times)'

Article By ZEKE MILLER and JOSH BOAK. 'Virus Outbreak Biden Rebound FILE - President Joe Biden removes his face mask as he arrives to speak about the economy during a meeting with CEOs in the South Court Auditorium on the White House complex in Washington, Thursday, July 28, 2022. Biden tested positive for COVID-19 again Saturday, July 30, slightly more than three days after he was cleared to exit coronavirus isolation, the White House said, in a rare case of “rebound” following treatment with an anti-viral drug. (AP Photo/Susan Walsh, File) ASSOCIATED PRESS'

HUFFPOST.COM ... AP CARLA K. JOHNSON

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‘COVID isn't the flu. Here's what you need to know and how testing can help you know what you're treating.’