Rep. Alexandria Ocasio-Cortez addresses supporters during a campaign rally for Sen. Bernie Sanders on Sunday. Photo: Brittany Greeson/Getty Images

Rep. Alexandria Ocasio-Cortez told supporters as former Vice President Joe Biden was projected big wins in Tuesday's primaries it had been a "tough night" for her chosen Democratic presidential candidate, Sen. Bernie Sanders.

Why it matters: "There's no sugar-coating it. Tonight's a tough night. Tonight's a tough night electorally ... [but] never, ever, ever let your heart turn black," Ocasio-Cortez said during an Instagram live broadcast. While Sanders has yet to comment on Biden being projected to win the Michigan, Mississippi and Missouri presidential primaries, Ocasio-Cortez's comments carry significant weight as one of the Vermont senator's highest-profile supporters.

Go deeper: Rep. Clyburn: DNC should "step in" for Biden after Tuesday's contests

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Updated 29 mins ago - Health

Which states have set single-day coronavirus records this week

Data: COVID Tracking Project and state health department data compiled by Axios; Map: Danielle Alberti and Naema Ahmed/Axios

13 states this week surpassed records set just last week for their highest number of coronavirus infections in a single day, according to the COVID Tracking Project and state health department data. 16 states in total reported new highs.

The big picture: The United States' alarming rise in coronavirus cases isn't just due to increased testing — particularly where the number of cases has grown fastest over the last month, Axios' Andrew Witherspoon and Caitlin Owens report.

Updated 51 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 6:30 p.m. ET: 12,389,660 — Total deaths: 557,279 — Total recoveries — 6,830,596Map.
  2. U.S.: Total confirmed cases as of 6:30 p.m. ET: 3,169,611 — Total deaths: 133,885 — Total recoveries: 983,185 — Total tested: 38,856,341Map.
  3. Public health: The reality of the coronavirus bites.
  4. Trade: Trump says he's no longer considering phase-two trade deal with China because the pandemic damaged the two countries' relationship.
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2 hours ago - Health

Reality of the coronavirus bites

National Airport in D.C. Photo: Daniel Slim/AFP/Getty Images

It feels like mid-March in America again. The coronavirus is surging, deaths are climbing and the country is dreading a wave of disruptions, less than four months since the first round started.

The big picture: Lingering under all the happy talk of future plans is the reality of this virus — which thrives in potential super-spreader conditions like mass gatherings.