National Study Identifies Record Antibiotic Prescription Rates Among Children With Multiple Complex Chronic Conditions

Boston Children's Hospital study finds children with 3+ chronic conditions have the highest antibiotic prescription rates of any population group.

By: AXL Media

Published: Apr 24, 2026, 6:50 AM EDT

Source: Information for this report was sourced from EurekAlert!

The Escalation of Antimicrobial Exposure in Complex Care

The growing global threat of antibiotic resistance has a specific and intense focal point among the most vulnerable pediatric patients. According to Kathleen D. Snow, MD, an Instructor of Pediatrics at Boston Children's Hospital, children with multiple complex chronic conditions (CCC) face markedly higher prescription fill rates and greater annual exposure than their healthy peers. Findings presented in Boston indicate that as a child's underlying level of medical complexity increases, their antibiotic usage grows non-linearly, positioning this group as a critical target for future antibiotic stewardship efforts to prevent complications like C. difficile.

Quantifying Prescription Trends Across Medicaid Populations

A retrospective cohort study involving over 2.3 million children provides a detailed look at how medical history dictates drug access. According to the research results, the annual antibiotic prescription fill rate for healthy children was 514 per 1,000 persons, but this figure surged to 2,882 per 1,000 for children with three or more complex chronic conditions. This data confirms that children with the highest complexity levels now possess the highest annual prescription rates recorded in any population group, pediatric or adult, within the studied database.

Shifting Patterns in Antibiotic Drug Class Distribution

Beyond the frequency of use, the types of medications prescribed change significantly based on a child's health status. According to the analysis of 2023 Medicaid claims, common antibiotics such as penicillins, cephalosporins, and macrolides accounted for 93% of prescriptions for healthy children. In contrast, these standard drugs made up only 64% of the prescriptions for children with three or more CCCs. Patients with higher complexity were substantially more likely to be prescribed sulfonamides, quinolones, and aminoglycosides, which often carry less favorable safety profiles.