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Photo: Justin Sullivan/Getty Images

More evidence supports the theory that vitamin E acetate in vaping products may be causing thousands of lung injuries and dozens of deaths among Americans.

Driving the news: Illegal THC-containing e-cigarette or vape products from 11 out of 12 patients in Minnesota with lung injuries also contained vitamin E acetate, according to a report from the CDC on Tuesday.

  • 20 THC-containing products seized during September 2019 contained vitamin E acetate, the study shows. But 10 products tested in 2018 before the outbreak began did not contain the ingredient.

What's happening: Vitamin E acetate is a viscous oil used as an additive in cannabis vape cartridges, allowing thicker clouds to be exhaled.

  • The oil is often used in foods and cosmetics and is not harmful when ingested. Vaporizing and inhaling vitamin E acetate, however, can cause fat to enter the lungs, leading to a sometimes fatal condition called lipoid pneumonia.

The backdrop: The FDA also tested several vape brands in October, which showed vitamin E acetate concentrations of 31% to 88% and lower-than-expected THC concentrations.

  • Most patients interviewed say they obtained these vaping products from black market retailers or from friends, the CDC says.

The bottom line: Health officials are still not ruling out other ingredients or causes of these cases, but cautioned vitamin E acetate should not be added to vaping products.

Go deeper:

Go deeper

DOJ seizes 36 U.S. website domains for Iranian government disinformation

Iran's President-Elect Ebrahim Raisi holds a press conference at Shahid Beheshti conference hall in Tehran on Monday. Photo: Majid Saeedi/Getty Images

American officials seized 36 news website domains linked to Iran's government for spreading disinformation as part of a propaganda campaign, the Department of Justice said Tuesday.

Why it matters: The action comes at a time of heightened tension between the two countries, with Iran's hardline President-elect Ebrahim Raisi on Monday ruling out negotiating over missiles or meeting with President Biden as the two nations hold talks on returning Tehran to the 2015 nuclear deal.

NYT: Khashoggi's killers had paramilitary training in U.S.

A vigil for journalist Jamal Khashoggi outside the Saudi Arabia consulate in Istanbul, following his killing in 2018 in Turkey. Photo: Chris McGrath/Getty Images

Several Saudis who took part in the killing of Washington Post journalist Jamal Khashoggi had paramilitary training in the U.S. under a State Department contract a year before his 2018 death, the New York Times reported Tuesday.

Why it matters: While there's no evidence the department knew that Crown Prince Mohammed bin Salman sanctioned Saudi officials to detain, kidnap and torture dissidents in 2017, the approval of such training underscores how "intensely intertwined" the U.S. has become with a nation known for human rights abuses, per the NYT.

U.S. attorney finalist trashes Labor secretary

Rachael Rollins and Marty Walsh. Photos: Jessica Rinaldi/The Boston Globe via Getty Images (Rollins); Tom Williams/CQ-Roll Call Inc. via Getty Images (Walsh)

A finalist for U.S. attorney in Boston is publicly trashing the city's former mayor — Labor Secretary Marty Walsh.

Why it matters: Rachael Rollins’ approach is perpetuating scrutiny of a troubled Cabinet secretary and fellow Democrat — and hints at the independence she may exhibit if tapped for top federal prosecutor for the eastern half of Massachusetts.