A growing number of newborns in the United States are missing a routine vitamin K injection that protects them against potentially fatal bleeding, raising concern among pediatricians and highlighting the consequences of declining established newborn care.

The vitamin K shot has been routinely administered to newborns for decades. But increasing parental refusals are being reported by hospitals, while medical professionals are warning that misinformation and distrust of healthcare recommendations may be putting infants at avoidable risk.

Why newborns need vitamin K

Vitamin K plays an essential role in blood clotting. Babies are naturally born with very low levels of the nutrient because relatively little passes through the placenta during pregnancy. Breast milk also contains only small amounts.

Without adequate vitamin K, an infant can develop vitamin K deficiency bleeding, or VKDB. The condition can cause spontaneous bleeding inside the body, including in the brain, and may occur without obvious warning signs.

The most dangerous form can appear weeks or months after birth. A baby may initially seem healthy before developing severe bleeding, neurological injury or other complications.

According to the US Centers for Disease Control and Prevention, babies who do not receive the injection are about 81 times more likely to develop late vitamin K deficiency bleeding than babies who receive it. The CDC also estimates that approximately one in five infants who develop the condition dies.

Refusals are increasing

A nationwide analysis of more than five million births between 2017 and 2024 found that the proportion of newborns not receiving vitamin K rose from 2.92% in 2017 to 5.18% in 2024.

More recent figures reported by Reuters in September 2026 indicate that the trend accelerated further. An analysis of electronic health records covering more than one million births found that the rate of newborns not receiving the injection within a day of birth increased from 5.2% at the beginning of 2026 to 8.1% by the end of June.

The analysis also found that the rate in the first half of 2026 was substantially higher than the average recorded between 2019 and 2024. These figures point to a growing public-health concern, although refusal rates alone do not establish how many deaths are directly attributable to the trend.

Reports of preventable infant deaths

Investigations by ProPublica have documented cases in which infants suffered catastrophic bleeding after their parents declined the vitamin K injection. Some babies died, while others survived with serious and lasting injuries.

The precise national death toll remains difficult to establish. US health agencies have not consistently tracked vitamin K refusals alongside subsequent bleeding events and deaths. Some cases may also be recorded under immediate causes such as brain haemorrhage rather than vitamin K deficiency.

ProPublica reported that death-certificate data showed fewer than a dozen deaths annually directly attributed to vitamin K deficiency bleeding, while medical specialists warned that the figures may fail to capture the full scale of the problem.

The lack of comprehensive surveillance makes it difficult to measure the trend accurately or identify every preventable case.

Misinformation and declining confidence

Doctors say some parents refuse the injection because of concerns about ingredients, possible side effects or the belief that newborns do not need medical intervention immediately after birth.

Misleading claims circulating on social media have also raised fears about the injection, including claims that it causes cancer. Earlier research suggesting a possible connection with childhood cancer was not confirmed by subsequent studies.

Medical organisations continue to recommend the injection because evidence shows that it is an effective way to prevent vitamin K deficiency bleeding. It is important to distinguish the vitamin K injection from a vaccine: it is a preventive treatment that supplies a nutrient required for normal blood clotting.

Researchers and clinicians say parents should receive clear explanations about its purpose, safety and benefits rather than being left to make decisions based on alarming or inaccurate online claims.

A growing challenge for hospitals and health officials

The rising refusal rate has prompted calls for better national monitoring. Medical professionals and lawmakers have urged health authorities to collect more reliable information about refusals, bleeding complications and infant deaths.

Hospitals are also adapting their approach. Some have introduced additional counselling for parents, while pediatric practices in several areas have begun making the injection available outside maternity hospitals.

The challenge is not only medical but also a matter of communication and public trust. Healthcare professionals must explain the risks clearly and respond respectfully to parental concerns while ensuring that families understand the consequences of refusing preventive treatment.

Protecting newborns during the first months of life

Vitamin K deficiency bleeding is preventable, but its consequences can be devastating when it occurs. The injection provides protection during a period when newborns have naturally low vitamin K levels and are particularly vulnerable to serious bleeding.

Parents who have questions about the injection, its ingredients or possible alternatives should discuss them with a qualified pediatrician before making a decision. Oral vitamin K schedules used in some countries are not automatically equivalent to the standard US injection and require specific medical guidance.

The growing number of refusals is a warning that established preventive care can become less effective when misinformation spreads faster than reliable medical advice. For newborns, whose health depends entirely on adult decisions, clear information and evidence-based care can make a life-saving difference.