Leonard Schleifer, the founder and CEO of Regeneron Pharmaceuticals, said on Sunday that President Trump's successful treatment with the company's antibody cocktail is "the weakest evidence you can get" on whether the drug is a cure.

Driving the news: Since leaving Walter Reed Medical Center on Monday, Trump has repeatedly claimed that he is "immune" from COVID-19 and said he views the antibody cocktail as a "cure."

What they're saying: “The president’s case is a case of one, and that’s what we call a case report. And it is evidence of what's happening, but it’s kind of the weakest evidence that you can get," Schleifer told CBS News' "Face the Nation."

  • “[T]he real evidence about how good a drug is and what it will do on average has to come from these larger clinical trials, these randomized clinical trials, which are the gold standard, and those are ongoing," he said.
  • The president’s case is “just low down on the evidence scale that we really need," and while the drug does create immunity, "it's probably going to last you for months," Schleifer added.

The bottom line: “Regeneron can’t do this alone. We need the entire industry. And I am so proud the industry has risen,” Schleifer said.

What to watch: Regeneron and Eli Lilly, which is developing a similar therapy, have applied for an emergency use authorization from the FDA.

Go deeper: Ex-FDA chief says Trump "definitely missed the window" to mass produce antibody drug

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Data: Axios/Ipsos poll; Note: ±3.3% margin of error; Chart: Axios Visuals

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The big picture: Week 28 of our national survey has most Americans rejecting ideas that Trump has floated around hydroxychloriquine as a virus treatment, how herd immunity works or any imminent availability of a vaccine.

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Photo: Mitchell Layton/Getty Images

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Why it matters: Schlissel said the order is meant to address small- and medium-sized social gatherings that have been identified as the primary cause of new cases on campus.

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California issues more rigid COVID-19 guidelines for theme park re-openings

Photo: Allen J. Schaben / Los Angeles Times via Getty Images

California health officials on Tuesday told theme parks like Disneyland and Universal Studios Hollywood that they can reopen once daily coronavirus cases in their respective counties drop below one per 100,000 people.

Why it matters: Disney and Universal, both of which hoped to reopen when their counties reached "moderate" spread, have been negatively impacted by the pandemic. Deadline reported that Universal Studios Hollywood laid off over 2,200 employees since July and Disney laid off 28,000 employees in September.