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U.S. newborns missing vitamin K shots face 81x higher risk of fatal brain bleeds, driven by rising parental refusals due to misinformation.
A growing number of U.S. parents are declining vitamin K shots for newborns, increasing the risk of life-threatening brain bleeds, according to a preliminary review of 25 global studies presented in February 2026.
Though refusal rates remain under 1% nationally, they’ve risen in states like Minnesota, California, Connecticut, and Iowa.
Babies who skip the shot are 81 times more likely to develop vitamin K deficiency bleeding, which can cause death or lifelong disabilities.
Parents often cite pain, preservatives, or misinformation.
Refusal is linked to higher rates of skipping other vital newborn protections like vaccines and eye medicine.
Experts urge improved prenatal counseling to address concerns and highlight the shot’s safety and life-saving benefits.
Los recién nacidos estadounidenses que no reciben inyecciones de vitamina K enfrentan un riesgo 81 veces mayor de hemorragias cerebrales fatales, impulsadas por el aumento de rechazos de los padres debido a la desinformación.