Photo: Leonard Ortiz/MediaNews Group/Orange County Register via Getty Images

A new study found that 13.9% of 3,000 New Yorkers tested had signs of the coronavirus, suggesting that about 10 times the number of people who have officially tested positive have had the virus, Bloomberg reports.

Why it matters: Studies like these will help us understand the virus and its true spread. So far, what we've been able to learn about it has been limited by inadequate testing, because that's resulted in only the sickest patients being tested.

  • It's unknown how many people have had the virus and been unable to get the test, never sought out a test, or were completely asymptomatic.

Details: In New York City, where the outbreak was more intense, 21.2% tested positive for an antibody showing that they'd had the virus.

The big picture: This is just one test, and we'll need more like it to get a clearer picture of the virus. But eventually, they'll tell us how contagious the virus is, how fatal it is, and how many people have already been infected and thus may have immunity.

Go deeper: How coronavirus antibody tests will help

Go deeper

Trump says Fauci is "wrong" about coronavirus cases surge

President Trump and National Institute of Allergy and Infectious Diseases director Anthony Fauci during an April daily coronavirus task force briefing at the White House. Photo: Drew Angerer/Getty Images

President Trump called out Anthony Fauci Saturday in a comment retweeting a video of the NIAID director explaining why coronavirus cases have been surging in the U.S.

Driving the news: In the video of Friday's testimony, Fauci explained that while European countries shut 95% of their economies, the U.S. "functionally shut down only about 50%." Trump responded, "Wrong! We have more cases because we have tested far more than any other country, 60,000,000.

Updated 8 hours ago - Health

World coronavirus updates

Data: The Center for Systems Science and Engineering at Johns Hopkins; Map: Axios Visuals

African countries collectively surpassed 1 million confirmed coronavirus cases this week.

Why it matters: Health experts believe the true number of COVID-19 cases in African countries is higher than that figure due to a lack of testing and fear that undetected cases could overload some of the world’s weakest health systems.

Updated 5 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 9:45 p.m. ET: 19,282,972 — Total deaths: 718,851 — Total recoveries — 11,671,491Map.
  2. U.S.: Total confirmed cases as of 9:45 p.m. ET: 4,937,441 — Total deaths: 161,248 — Total recoveries: 1,623,870 — Total tests: 60,415,558Map.
  3. Politics: Trump says he's prepared to sign executive orders on coronavirus aid.
  4. Education: Cuomo says all New York schools can reopen for in-person learning.
  5. Public health: Surgeon general urges flu shots to prevent "double whammy" with coronavirus — Massachusetts pauses reopening after uptick in coronavirus cases.
  6. World: Africa records over 1 million coronavirus cases — Gates Foundation puts $150 million behind coronavirus vaccine production.