As the use of at-home COVID-19 test kits rises, so has the number of accidental exposures to a chemical in these test kits that can be harmful, especially to children. That chemical is called sodium azide.

<p>As the use of at-home COVID-19 test kits rises, so has the number of accidental exposures to a chemical in these test kits that can be harmful, especially to children. That chemical is called sodium azide.</p>

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