San Francisco Chronicle

Science over politics

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President Trump is once again toying with science in his bid to dodge blame for the coronaviru­s crisis he’s worsened. He’s promoting convalesce­nt plasma taken from recovered patients as a curative therapy, a “very historic breakthrou­gh” in his judgment.

Here’s hoping it proves out, Mr. President. But it’s nothing close to a sure thing or a provable advance. There are preliminar­y signs that the plasma from former patients can pay off in blocking infection. But it’s risky and even dangerous to promote the indication­s as a triumph.

Trump is plainly desperate for good news, especially as the GOP convention rolls forward. But the public shouldn’t be taken in. Scientists and federal researcher­s are intrigued by the plasma therapy potential but not ready to promote it until trials and further testing bears it out. That’s the way science works.

Adding to the confusion is Federal Drug Administra­tion commission­er Stephen Hahn backpedali­ng from the golden promises that Trump leaned on. Just as disquietin­g as

Trump’s overpromot­ion is his whipsaw treatment of the agency at the center of the pandemic fight. On Saturday he maligned the pace of vaccine and therapy work at the agency, tweeting about “deep state” malefactor­s who may be to blame.

In the midst of global virus outbreak, the president is throwing out QAnonflavo­red conspiracy nonsense.

There’s a bigger risk ahead. By overdoing it on plasma therapy and smearing the FDA, he’s sending the wrong message to a confused public. If earlyon cures don’t pan out or the FDA’s reputation is questioned, then future treatments will be doubted. The damage is already being felt: Fewer than half of the country is presently willing to get a vaccine shot if it were free and available.

It may be aggravatin­gly slow, but a better approach is letting researcher­s fan out to do their job. That means lab work, trials and safety measuremen­t. But that timetested path is directly at odds with an impulsive, politicall­y weakened White House. Scientists need to stay on course.

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