Photo: Sushil Kumar/Hindustan Times via Getty Images

Federal health officials have found vitamin E acetate in the lung fluids of 29 patients diagnosed with a mysterious vaping-related illness, the Centers for Disease Control announced Friday, a "breakthrough" in the search for the culprit of the mysterious disease, the Washington Post writes.

Why it matters: The development further links vitamin E acetate as "a very strong culprit of" the illness, said Anne Schuchat, principal deputy director at the CDC, per the Post. But the agency isn't ruling out other compounds or ingredients as sources for the illness, which has afflicted more than 2,000 people, and killed 39.

  • Officials need to conduct additional testing, Schuchat noted, some of which will be completed on people who vaped and did not become ill.

Of note: Investigators also found THC, the psychoactive ingredient in marijuana, in 23 of the patients. Most patients who have fallen ill in the outbreak have vaped THC, officials have said.

Flashback: In early September, state and federal health authorities homed in on vitamin E acetate as they tried to determine the cause of vaping-related illnesses. The compound turned up in marijuana products that patients had used.

Go deeper:

Go deeper

Natural gas pipeline project cancelled after Supreme Court victory

Photo: Rafael Henrique/SOPA Images/LightRocket via Getty Images

Dominion Energy announced Sunday it has agreed to sell its natural gas transmission and storage network to Warren Buffett's Berkshire Hathaway in a deal valued at $10 billion, including the assumption of debt.

Why it matters: The deal comes as Duke Energy Corp. and Dominion Energy announced they are canceling their plans for the $8 billion Atlantic Coast Pipeline following a Supreme Court ruling. The ruling removed major hurdles for the companies, but "recent developments have created an unacceptable layer of uncertainty and anticipated" for the project.

Trump campaign "strongly" encourages face masks at outdoor rally

Photo: Jabin Botsford/The Washington Post via Getty Images

The Trump campaign will be providing face masks and hand sanitizer for all attendees at an upcoming rally Saturday in Portsmouth, New Hampshire.

  • The campaign said in an email on Sunday that attendees are "strongly encouraged" to wear the masks.

Why it matters: The campaign's first coronavirus-era rally in Tulsa, Oklahoma, was notable for its lack of masks.

Updated 3 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Aïda Amer/Axios

  1. Global: Total confirmed cases as of 2 p.m. ET: 11,317,637 — Total deaths: 531,729 — Total recoveries — 6,111,910Map.
  2. U.S.: Total confirmed cases as of 2 p.m. ET: 2,852,807 — Total deaths: 129,718 — Total recoveries: 894,325 — Total tested: 34,858,427Map.
  3. States: Photos of America's pandemic July 4 ICU beds in Arizona hot spot near capacity — Houston mayor warns about hospitals
  4. Public health: U.S. coronavirus infections hit record highs for 3 straight days.
  5. Politics: Former Trump official Tom Bossert says face masks “are not enough”
  6. World: Mexican leaders call for tighter border control as infections rise in U.S.
  7. Sports: Sports return stalked by coronavirus
  8. 1 📽 thing: Drive-in movie theaters are making a comeback.