From SciShow.

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Tattoos produce an immune response when you get them. But it turns out they keep affecting your immune system after that — and it might affect how effective your shots for COVID-19 or the flu are.

Hosted by: Savannah Geary (they/them)
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Sources:
https://docs.google.com/document/d/e/2PACX-1vSdmPL1y2McHgf7Wz0aBoPmrJMvKcTNrGvblpB-bpcWcaHpW7xYTvKejRjvF6huwp6D-4TWsER9SrAc/pub