Event Brief
Rats and mice show genetic rodenticide resistance
Filed: Jun 24, 2026 at 1:06 PM ET
Summary: A study finds many rats and mice in the U.S. carry mutations linked to rodenticide resistance.
WHO: Jin-Jia Yu and researchers studying rodenticide resistance
WHAT: Researchers report genetic mutations linked to rodenticide resistance in rats and mice tested in the U.S. Northeast and Washington, D.C.
WHEN: Jun 24, 2026 at 12:18 PM ET
WHERE: USA
WHY: The findings indicate rodents may be becoming resistant to the poison used to control their populations.
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