Axios

China on Monday began its most extensive lockdown in two years, with mass testing in Shanghai, China's financial capital and largest city, AP reports.

Why it matters: The move raises questions about the economic toll of the nation's "zero COVID" strategy.

The COVID-19 pandemic and the strain it has put on healthcare workforces is threatening patient care.

Why it matters: Years of progress reducing medical errors and preventable hospital-acquired infections were reversed in medical centers and skilled nursing facilities during the pandemic.

White House principal deputy press secretary Karine Jean-Pierre said Sunday night she's tested positive for COVID-19 following a trip to Europe with President Biden, but he's not considered a close contact.

What she's saying: "I last saw the President during a socially distanced meeting yesterday, and the President is not considered a close contact as defined by CDC guidance," Jean-Pierre said in a statement.