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Public health experts are raising alarms over a growing trend of parents refusing the routine vitamin K shot given to newborns to prevent severe, life-threatening bleeding. According to data from a December 8 study published in the Journal of the American Medical Association (JAMA) and a May 6 investigation by ProPublica, the number of infants missing this crucial birth intervention has climbed steadily, accelerating notably after 2020.
The single injection of vitamin K, administered within six hours of birth, has been standard medical practice in the United States since 1961 to help blood clot properly. However, recent analyses show that vaccine and medicine hesitancy has increasingly swept up non-vaccine interventions like vitamin K, leaving a rising number of newborns vulnerable to severe bleeding disorders.
Rising Refusal Rates Documented Across US Hospitals
Data tracked across more than 40 hospitals in all 50 states reveal a clear upward trajectory in vitamin K refusals. According to the JAMA study, which reviewed electronic medical records from approximately 5 million births between 2017 and 2024, the proportion of infants declining the shot rose from 2.92% in 2017 to 5.18% in 2024. Investigators noted that while refusal rates began creeping upward in 2019—indicating that pandemic-related skepticism was not the sole catalyst—the shift accelerated sharply following 2020.
Parallel findings from ProPublica’s investigation indicate that higher bleeding-related mortality rates among infants have emerged alongside the decline in administration rates. Researchers examining death certificate data from federal and state agencies estimated that a meaningful portion of the 700 infant deaths attributed to spontaneous bleeding in the brain during 2024 likely stemmed from vitamin K deficiency.
Medical Risks of Vitamin K Deficiency Bleeding
All infants are born with low levels of vitamin K, a nutrient essential for the formation of clotting factors that naturally stop bleeding. Because normal newborn nutrition, including breast milk, does not supply adequate amounts of the vitamin during the early months of life, newborns face a distinct window of vulnerability.
Without the prophylactic injection, infants are 81 times more likely to develop vitamin K deficiency bleeding (VKDB), according to the Centers for Disease Control and Prevention (CDC). The condition can trigger severe internal bleeding in the gastrointestinal tract and the brain, carrying a mortality rate of roughly 1 in 5. Parents who refuse the shot typically cite concerns over injection pain, perceived side effects, or a general belief that the intervention is unnecessary, according to findings cited in the JAMA study.
Broader Policy Shifts and Standard Newborn Care
Vitamin K is one of three interventions recommended for newborns by the American Academy of Pediatrics (AAP) and the CDC, alongside an antibiotic eye ointment and the hepatitis B vaccine. Public health reporting notes that the vitamin K shot has become entangled in a broader post-pandemic tide of skepticism affecting routine childhood immunizations, such as shots for measles and whooping cough.
In December, under the leadership of Department of Health and Human Services Secretary Robert F. Kennedy Jr., a vaccine panel moved to end recommendations for the hepatitis B vaccine for newborns—a decision subsequently paused by a federal court, with an appeal currently underway.
Despite these broader policy debates, medical societies maintain that the clinical necessity of vitamin K remains clear-cut. Major health organizations emphasize that a single, timely injection at birth provides immediate protection against rare but catastrophic spontaneous bleeding events during an infant’s first six months of life.
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