Tattoo ink moves through the body, killing immune cells and weakening vaccine response [Los Angeles Times (CA)]
Pfizer, Inc. (PFE)
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Source: Los Angeles Times
Scientists in Switzerland used a mouse model to trace what happens after tattooing. Pigments drained into nearby lymph nodes within minutes and continued to accumulate for two months, triggering immune-cell death and sustained inflammation. The ink also weakened the antibody response to Pfizer Inc. and BioNTech SE's Covid vaccine when the shot was administered in tattooed skin. In contrast, the same inflammation appeared to boost responses to an inactivated flu vaccine. The findings, published this week in the Proceedings of the National Academy of Sciences, sharpen a public-health question as tattooing becomes mainstream. A 2023 Pew Research survey estimated that 32% of U.S. adults have at least one tattoo, and 22% have multiple. With billions spent on tattoos each year, the authors at Università della Svizzera italiana in Bellinzona say the results point to a need for tougher toxicology testing and stricter oversight of tattoo-ink ingredients, which face far looser regulation
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