US infant bleeding cases have risen as more parents decline the vitamin K shot routinely offered to newborns, according to reporting from Bloomberg.com and other outlets. Bloomberg.com reported on Thursday that more babies in the United States are dying after parents refuse the injection. The New York Times reported that infant bleeding surged as parents rejected vitamin K shots, citing studies.

Coverage of the research also appeared in Contemporary Pediatrics, which reported that skipping the newborn vitamin K shot was tied to a 47 percent higher risk of infant bleeding. PR Newswire carried an announcement that the Children's Hospital of Philadelphia had published a study finding that declining use of the newborn vitamin K shot is linked to a higher risk of infant bleeding. ABC News reported that more parents are declining the shots for newborns, putting more babies at risk of bleeding.

The vitamin K shot is given to newborns shortly after birth. The reports frame the trend as a public health concern tied to parental refusal of the injection, with the studies pointing to a higher bleeding risk among infants who do not receive it. The Children's Hospital of Philadelphia study, as announced via PR Newswire, is among the research underlying the coverage.

The outlets did not, in the material available, specify the size of the increase in deaths or the period covered. Details of the studies' methods and data were not included in the summaries.

What to watch next: whether health authorities respond with updated guidance on the newborn vitamin K shot, and whether further data on infant bleeding rates is released.