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Three times in one day I received the same warning from different groups of friends, through various channels.It came through email, Facebook, and WhatsApp, and I also saw it circulating widely on Twitter.I replied thanking them, saying that I knew they wanted to help (we all do) but that, actually, the warning wasn't true and could even be dangerous.I felt almost unkind by pointing out that holding your breath wasn't a test for covid-19.And that drinking lots of water wouldn't help it go away.
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BMJ
Transnational Press London
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