A nurse administers an Ebola vaccine in Monrovia, Liberia, as part of a 2015 clinical research study. Photo: John Moore/Getty Images

An Ebola vaccine made by Merck has protected a group of volunteers for two years — the longest it has been shown to protect against the disease, according to a study published in Lancet Infectious Diseases.

The context: "A fast-acting, long-lasting vaccine given in a single dose would be an effective tool for controlling dangerous Ebola outbreaks," STAT's Helen Branswell reports.

Yes, but: The vaccine targets only one strain of Ebola, known as Zaire, and samples from additional trials will be needed to support these findings.

What's next: Merck is looking to apply for FDA approval of the candidate vaccine this year.

Stay tuned for: The lead author of the paper and an infectious disease specialist, Angela Huttner and her team have collected blood samples from volunteers in Geneva, Switzerland to see how the vaccine performs after three years, but they haven't analyzed them yet.

  • Huttner told STAT: “Our hypothesis is that the values we’re seeing at two years shouldn’t change too much at three, four, and five years.”

Take note: Some experts in the industry believe a two-dose vaccine, like the ones being developed by Janssen Vaccines and Prevention BV, a subsidiary of Johnson & Johnson, may be better equipped at offering long-term protection.

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Trump's new TikTok threat

Photo illustration: Aïda Amer/Axios. Photo: Jim Watson/AFP via Getty Images

President Trump said twice Monday that the U.S. Treasury would need to get a portion of the sale price of TikTok, as a condition of regulatory approval.

Why it matters: This is akin to extortion — the sort of thing you'd expect to hear on a wiretap, not from the White House in front of reporters.

Ford names James Farley as new CEO amid ongoing turnaround effort

James Hackett, left, is retiring as Ford CEO. Jim Farley, right, takes over Oct. 1. Photo: Ford

Ford announced Tuesday that James Farley will take over as its next CEO, replacing James Hackett, 65, who is retiring after three years in the job.

Why it matters: It leaves Farley to complete the company's ongoing turnaround effort. The transition will be that much harder as the industry tries to navigate the coronavirus-induced economic slowdown which shuttered Ford plants for two months on the eve of some of its most important vehicle launches.

Updated 3 hours ago - Politics & Policy

Watch the full "Axios on HBO" interview with President Trump

In this episode of “Axios on HBO”, President Trump discusses his handling of the coronavirus pandemic, the upcoming election and much more with National Political Correspondent Jonathan Swan.

The interview was filmed on Tuesday, July 28 and aired Monday, Aug. 3 on HBO.