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    "headline": "Two Million Birth Records Measured a Small Refusal's Cost",
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    "dek": "Swedish infants without a recorded vitamin K injection had higher odds of bleeding, including intracranial hemorrhage.",
    "summary": "Swedish infants without a recorded vitamin K injection had higher odds of bleeding, including intracranial hemorrhage.",
    "body_text": "A Swedish registry study followed more than two million infants born from 2003 through 2021. Among 24,089 without a recorded intramuscular vitamin K dose, the odds of any bleeding diagnosis by six months were about 1.5 times higher and intracranial bleeding odds nearly three times higher. Nonreceipt remained uncommon but more than doubled over the period. The observational design measures association and records, not every parent's reasons or perfect dose adherence.",
    "why_it_matters": "Swedish infants without a recorded vitamin K injection had higher odds of bleeding, including intracranial hemorrhage.",
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    "tags": [
      "newborns",
      "vitamin K",
      "bleeding",
      "public health"
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    {
      "source_id": "source-2026-08-02-010",
      "title": "JAMA Pediatrics: vitamin K prophylaxis and infant bleeding",
      "publisher": "JAMA Pediatrics",
      "url": "https://doi.org/10.1001/jamapediatrics.2026.2606",
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