Children ages 2 to 17 who died after being admitted to intensive care with RSV almost always had serious underlying health problems, a new U.S. study shows. Among those who died, 93.8% had at least one complex chronic condition, according to research led by Children's National Hospital in Washington, D.C., and published in JAMA Network Open, CIDRAP reported.
The data span January 2017 through June 2023 and come from electronic health records at more than 100 U.S. health systems. Children 2 and older made up nearly half of the RSV-related pediatric ICU admissions in the dataset and about two-thirds of the deaths.
The finding matters as RSV season approaches, because current prevention tools are aimed at babies and older adults. Children 2 and older with medical complexity have no approved RSV immunization of their own, a gap the authors say needs attention.
The Numbers Behind the Findings
Researchers identified 13,732 pediatric ICU admissions involving RSV, including 735 deaths, MedPage Today reported. Of those, 6,430 admissions and 484 deaths involved children 2 through 17. Children 2 and older accounted for 46.9% of the RSV-related ICU cases and 65.9% of the deaths.
More than half of the older children admitted, 57.2%, had at least one complex chronic condition, and about a quarter had three or more. The most common categories were neurologic or neuromuscular conditions (24.0%), gastrointestinal conditions (22.9%), and cardiovascular conditions (19.0%). About 29% of admissions involved children who depended on medical technology such as feeding tubes or breathing support, and 3.2% had received a transplant.
Risk rose with complexity. Children with at least one complex chronic condition had nearly 13 times the odds of death, and those with three or more had about 22 times the odds. Survivors typically had one affected organ system, while children who died typically had four. Children who died were also older, with a median age of 9.1 years compared with 6.5 years for survivors.
"Our study demonstrated that older children and adolescents with medical complexity account for a disproportionate share of RSV-associated critical illness," lead author Dr. Taylor Olson of Children's National told MedPage Today. "These children represent an important population for development of prevention strategies."
A Protection Gap After Age 2
For infants, families now have options: a maternal RSV vaccine given during pregnancy or a long-acting antibody shot for babies. Some higher-risk children ages 8 to 19 months can receive the antibody nirsevimab in their second RSV season, but the CDC's RSV guidance for infants and young children does not recommend it for anyone 20 months or older. No RSV vaccine is approved for older children.
That leaves a child with cerebral palsy, a heart defect, or a tracheostomy without a targeted RSV product once they pass that age. The authors said active immunization of older children is biologically plausible, though the best strategy may depend on age and prior RSV exposure.
The pattern is consistent with earlier research. A CDC-led analysis of 12 states found that 83% of children who died with RSV and had chart reviews had at least one underlying medical condition. An earlier JAMA Network Open study of U.S. pediatric ICUs found RSV in about 11% of ICU encounters, and a Canadian hospital study found that risk factors for severe disease differed between children under 2 and older children.
Evidence Limits Families Should Know
This was an observational study of health records. It shows who died with RSV in the ICU, not that RSV alone caused each death. Children with many chronic conditions are more fragile overall, and other infections or complications may have contributed.
The dataset covers only children sick enough to need intensive care, so it does not describe the risk for a typical child with RSV. Most older children who catch RSV have cold-like symptoms and recover at home. The study period also includes the pandemic years, when RSV seasons were disrupted.
Healthy children can still become critically ill. About 43% of the older children admitted to the ICU with RSV had no complex chronic condition, even though death was far less common in that group.
Practical Steps for Caregivers This Season
Caregivers of medically complex children can ask the child's specialist or pediatrician whether an RSV action plan makes sense, including when to call and when to go to the emergency room. Keeping the child up to date on flu and COVID-19 vaccines protects against other respiratory infections that can strain fragile lungs.
At home, frequent handwashing, keeping sick siblings and visitors away when possible, and cleaning shared surfaces reduce spread. Families with a baby under 8 months should talk with their clinician about the maternal vaccine or infant antibody, which also helps protect medically complex siblings in the household.
Seek urgent care if a child has fast or labored breathing, pulling in at the ribs or neck with each breath, bluish lips or skin, trouble feeding or drinking, far fewer wet diapers, or unusual sleepiness. For children who depend on oxygen or ventilators, any increase in oxygen needs is a reason to call the care team right away.
RSV deaths among older children in intensive care are concentrated among those with serious chronic conditions, and those children currently have no targeted RSV protection. Their families should build a plan with their care team before RSV season peaks. MedicalDaily will follow any trials or federal guidance that address this group.
Key Questions Answered
What did the RSV study find?
Among children 2 to 17 who died after ICU admission with RSV from 2017 to 2023, 93.8% had at least one complex chronic condition.
Which conditions were most common?
Neurologic or neuromuscular, gastrointestinal, and cardiovascular conditions were the most frequent. Many children also depended on medical technology.
Is there an RSV shot for children over age 2?
Not currently. The CDC does not recommend the infant antibody nirsevimab for anyone 20 months or older, and no RSV vaccine is approved for older children.
Does the study prove RSV caused these deaths?
No. It is an observational records study. It shows an association between medical complexity and death, but other factors may have contributed.
What warning signs need urgent care?
Fast or labored breathing, ribs pulling in with each breath, bluish lips, trouble drinking, fewer wet diapers or unusual sleepiness.
Published by Medicaldaily.com
