Wall Street Journalのインスタグラム(wsj) - 12月18日 04時16分

Wash your hands, wear a mask and don’t forget to gargle with mouthwash—that’s the message Unilever and Colgate-Palmolive are carefully starting to push after research they commissioned showed that certain types of mouthwash and toothpaste could potentially help deactivate the virus that causes Covid-19.⠀
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Reducing virus particles in the mouth could help fight against the pandemic, the companies said, because Covid-19 can be spread through droplets generated when an infected person coughs, sneezes or speaks. Both companies said the mouthwashes dissolve the outer protective layer of virus particles, preventing them from attaching to cells and infecting them.⠀
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But based on tests so far they can’t definitively say how long the benefit would last or what impact coughing would have. That makes it hard to judge how useful oral-hygiene products could be in curbing transmission.⠀
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Unilever said a lab-based study it commissioned found mouthwash containing cetylpyridinium chloride, or CPC—an ingredient used by dentists for its antibacterial properties—reduced SARS-CoV-2 particles by 99.9% after 30 seconds of rinsing.⠀
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An associate research scientist at Columbia University’s Center of Infection and Immunity who reviewed the results of the study commissioned by Unilever said that the findings were promising but results from human trials are needed.⠀
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Unilever said it plans to follow its study—in which scientists used a culture dish to simulate the viral load in the mouth—with a trial in at least 50 people early next year.⠀
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In the meantime, Unilever is launching mouthwash with CPC in a string of new markets, from Italy and France to India and Indonesia. The company doesn’t plan to launch these in the U.S. Unilever isn’t making any new claims on product packaging, but has been promoting its findings through social media and its website.⠀
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Read more at the link in our bio.⠀
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📷: @amylombard for @wsjphotos

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