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Nonreceipt of Newborn Vitamin K and Risk of Bleeding

JAMA 10.1001/jama.2026.21764

November 05, 2026 at 11:05 AM EST

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Nonreceipt of vitamin K and infant bleeding incidence have increased in the US, and newborns who did not receive vitamin K were at significantly higher risk of bleeding during their first 6 months.

Corresponding Author: Heather H. Burris, MD, MPH, Division of Neonatology, Roberts Center for Pediatric Research, 734 Schuylkill Ave, Room 19363, Philadelphia, PA 19146 (burrish@chop.edu).

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