Asymptomatic

Test on Covid Swabs: Nylon Bristles Stay in Body

A reader wrote: I have repeated the experiment shown on Twitter, and the NHS swabs do shed nylon bristles when rubbed against a piece of raw bacon. Repeated swabbing of asymptomatic people (especially children) must cause damage to the mucosa, which is the first line of defence against respiratory viruses. Is this a problem they

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