U.S. Newborn Vitamin K Refusals Rise Sharply, Increasing Risk of Dangerous Bleeding
01 Event
The share of newborns in the United States not receiving the standard vitamin K injection shortly after birth rose sharply during the first half of 2026, according to an analysis of more than 1 million births reviewed by Reuters. The rate of non-receipt increased more than 57% from January through June and reached 8.1% by the end of June, up from 5.2% six months earlier.
Vitamin K helps blood clot. Babies are born with very low levels of the vitamin, leaving them vulnerable to vitamin-K-deficiency bleeding during the first months of life. The U.S. Centers for Disease Control and Prevention continues to recommend the injection at birth.
Reuters interviewed pediatricians, neonatologists and pediatric critical-care specialists who described rising refusals as a major concern because severe bleeding can occur without obvious warning.
02 What Changed?
Refusals have been rising for years, but the 2026 increase accelerated. Health-data company Truveta reviewed records for 1,026,375 infants born to 825,599 mothers between January 2019 and June 2026. In the first half of 2026, the rate of newborns not receiving the vitamin K shot was 2.5 times the average rate from 2019 through 2024 and 1.4 times the 2025 rate.
Doctors told Reuters that vitamin K refusal is increasingly appearing alongside refusal of other standard newborn interventions. Several clinicians linked the trend to broader distrust of vaccines and medical recommendations, even though vitamin K is not a vaccine.
The political environment has added to that confusion. Reuters reported that Health Secretary Robert F. Kennedy Jr. has long questioned established vaccine policy and that changes announced in January to several childhood vaccine recommendations contributed to uncertainty among some parents. Those vaccine-policy changes were later put on hold by a court ruling. Kennedy denied responsibility for declining confidence in vitamin K, and the Department of Health and Human Services said mistrust predates the current administration.
03 Why It Matters
The medical risk is not theoretical. According to the CDC figures cited by Reuters, infants who do not receive the vitamin K injection are 81 times more likely to experience vitamin-K-deficiency bleeding during the first six months of life.
Without the injection, serious bleeding occurs in about one out of 59 births, Reuters reported. One out of five infants who experience serious bleeding will die. Bleeding can occur in the brain or gastrointestinal tract and may not be obvious until substantial damage has occurred.
That is why the injection has been standard newborn care for decades. The intervention is intended to prevent a specific deficiency during the period before infants build more reliable vitamin K levels through diet and normal biological development.
This story should not be framed as a vaccine-effectiveness debate. Vitamin K is a nutrient used to support clotting, and the injection is given because newborns naturally begin life with low stores. Confusing it with vaccination can make the public-health discussion less accurate.
04 What It Means for You
Parents weighing newborn care decisions should discuss the risks and benefits with a qualified pediatric or neonatal clinician rather than relying on social-media claims. The current concern is not that every baby who misses vitamin K will bleed. It is that the risk of a rare but potentially catastrophic event becomes much higher without prophylaxis.
Some hospitals have adopted firm policies around procedures that can increase bleeding risk. Several doctors told Reuters that hospitals may decline to circumcise male newborns who have not received vitamin K. That creates a visible consequence for some families, while girls may not encounter an equivalent procedural checkpoint.
Researchers have noticed a gender difference. A study of three hospitals in the University of Pennsylvania health system found that being born a girl was associated with twice the risk of vitamin K refusal. Truveta’s national data showed that in June 2026, 8.9% of girls and 7.3% of boys had not received the shot within a day of birth.
For related Earnyx science coverage, see AI May Predict How Strongly You’ll Respond to a Vaccine Before the Shot. The medical questions are different, but both stories show why treatment decisions should be separated from generalized distrust of medical interventions.
05 Numbers + Context
The Truveta analysis covered records from more than 140 million people and identified 1,026,375 infants born between January 2019 and June 2026. The share not receiving vitamin K at birth reached 8.1% in June 2026, compared with 5.2% six months earlier.
The rate rose more than 57% during the first half of the year. Relative to the 2019-2024 average, the first-half 2026 rate was 2.5 times higher. It was 1.4 times higher than in 2025.
The CDC says babies who do not receive the injection are 81 times more likely to develop dangerous vitamin-K-deficiency bleeding in the first six months. Reuters reported that such bleeding occurs in roughly one out of 59 births without the shot and that about one in five infants with serious bleeding dies.
Doctors are changing practice in response. Zarminali Pediatrics, which operates 45 practices in 13 states, began stocking vitamin K injections in its primary-care offices because hospital refusals had become common enough that some parents later reconsidered. Other physicians told Reuters they were doing the same.
06 Earnyx Takeaway
The most important fact is simple: refusal is rising, and the medical consequence being discussed is preventable bleeding, not a theoretical debate about a new treatment. The vitamin K injection has a specific purpose during a period when newborns naturally have very low vitamin K levels.
The data also show why public-health communication matters. A treatment can become entangled with broader mistrust even when it is not the same type of intervention being debated politically. When that happens, parents may make decisions based on categories that do not medically apply.
For readers, this article should not substitute for personal medical advice. It should make the evidence easier to understand: non-receipt rose sharply in 2026, the CDC continues to recommend the shot and clinicians are warning that the resulting bleeding can be severe, sudden and sometimes fatal.
Sources: Reuters, September 1, 2026; CDC risk figures as reported by Reuters.