Photo: Chip Somodevilla/Getty Images

White House Press Secretary Sarah Sanders told reporters on Tuesday afternoon that she "can't guarantee" that the president has never used the N-word, but said that she has never heard him say it.

Key quotes: Sanders accused Omarosa of trying "to tear this entire place down," and blamed the press for providing "a large platform to someone they know not to have a lot of credibility." She did not reveal whether or not she had signed an NDA, but pointed out that the practice is "common in a lot of places," especially for government jobs for employees with a security clearance. Sanders defended the president in explaining that calling Omarosa a "dog" did not have anything to do with race.

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16 mins ago - Health

Top business leaders urge White House to develop mandatory mask guidelines

A man walks past a Ramen restaurant in Los Angeles, California on July 1. Photo: Frederic J. Brown/AFP via Getty Images

The heads of the U.S. Chamber of Commerce, Business Roundtable, National Retail Federation and other top business organizations wrote an open letter on Thursday urging the White House coronavirus task force to work with governors to make face coverings mandatory in all public spaces.

Driving the news: An analysis led by Goldman Sachs' chief economist found that a national mandate requiring face coverings would "could potentially substitute for lockdowns that would otherwise subtract nearly 5% from GDP," the Washington Post reports.

Updated 47 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 3:30 p.m. ET: 10,763,604 — Total deaths: 517,667 — Total recoveries — 5,522,094Map.
  2. U.S.: Total confirmed cases as of 3:30 p.m. ET: 2,715,124 — Total deaths: 128,439 — Total recoveries: 729,994 — Total tested: 32,827,359Map.
  3. Public health: What we know about the immune response to coronavirus and what it means for a vaccine.
  4. Politics: Herman Cain hospitalized for COVID-19 after attending Trump Tulsa rally — Biden downplays jobs number, rebukes Trump for ignoring health crisis.
  5. States: Florida reports more than 10,000 new coronavirus cases — 5 states saw 27% spike in heart-related deaths in first 3 months of coronavirus pandemic.

The other immune responders to COVID-19

Illustration: Eniola Odetunde/Axios

Scientists are inching closer to understanding how antibodies and immune cells are unleashed by the body in response to the novel coronavirus.

Why it matters: Natural immunity differs from that afforded by vaccination but it offers clues for the design of effective vaccines and therapies.