Children's Hospital Colorado Administers Over 18,000 Vaccines to Pediatric Patients Under Anesthesia Since 2020

An article published in March 2026 in AAP News by anesthesiologists Caroline A. Pasquariello, M.D., FAAP (Children's Hospital of Philadelphia) and Kim M. Strupp, M.D., FAAP (Children's Hospital Colorado) describes how Children's Hospital Colorado (CHCO) has integrated immunizations into perioperative and periprocedural care. The piece notes that since 2020, CHCO has offered influenza vaccines to all eligible patients undergoing elective general anesthesia, resulting in more than 18,000 vaccinations. Additional vaccines beyond flu shots are administered at the request of primary care clinicians, particularly for children with neurocognitive conditions who cannot tolerate vaccination without sedation.[1][1]

The program builds on earlier efforts at CHCO, where a best-practice alert implemented in 2020 led to a dramatic increase in perioperative flu vaccinations—from just 30 in a six-week pre-intervention period to over 1,000 within months, with no reported vaccine-related complications.[2] Similar initiatives exist at other institutions, such as Children's Hospital of Philadelphia, which administered nearly 2,000 influenza vaccines under anesthesia in one recent period.[1]

Peer-reviewed literature highlights both potential benefits and risks. Reviews in Pediatric Anesthesia (2007, 2021) and Current Opinion in Anaesthesiology (2017) note that vaccine-induced fevers or inflammatory responses could be mistaken for postoperative complications, and anesthesia/surgery may have immunomodulatory effects. Guidelines from the Association of Paediatric Anaesthetists of Great Britain and Ireland recommend separating elective surgery and vaccinations by days to weeks to avoid diagnostic confusion.[3]

The AAP News authors frame the approach as a practical way to improve vaccination rates among hard-to-reach children, leveraging the comprehensive pre-anesthesia evaluation. Critics, including independent reports, raise questions about informed consent processes, potential underreporting of adverse events when reactions overlap with surgical recovery, and the ethics of combining interventions in vulnerable populations. No independent large-scale safety studies specifically on combined vaccine-anesthesia administration in this context were identified in the reviewed sources.

Hospital statements and public health reporting in Colorado continue to emphasize adherence to AAP-recommended schedules amid broader debates on vaccine policy.[4]