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Pediatric Infectious Disease Journal:
doi: 10.1097/INF.0b013e318270362c
Original Studies

Potential Intussusception Risk Versus Benefits of Rotavirus Vaccination in the United States

Desai, Rishi MD, MPH; Cortese, Margaret M. MD; Meltzer, Martin I. PhD; Shankar, Manjunath MB BS, PhD; Tate, Jacqueline E. PhD; Yen, Catherine MD, MPH; Patel, Manish M. MD; Parashar, Umesh D. MB BS, MPH

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Abstract

Background: International data show a low-level increased risk of intussusception associated with rotavirus vaccination. Although US data have not documented a risk, we assumed a risk similar to international settings and compared potential vaccine-associated intussusception cases with benefits of prevention of rotavirus gastroenteritis by a fully implemented US rotavirus vaccine program.

Methods: To calculate excess intussusception cases, we used national data on vaccine coverage and baseline intussusception rates, and assumed a vaccine-associated intussusception relative risk of 5.3 (95% confidence interval [CI]: 3.0–9.3) in the first week after the first vaccine dose, the risk seen in international settings. We used postlicensure vaccine effectiveness data to calculate rotavirus disease burden averted.

Results: For a US birth cohort of 4.3 million infants, vaccine-associated intussusception could cause an excess 0.2 (range: 0.1–0.3) deaths, 45 (range: 21–86) hospitalizations and 13 (range: 6–25) cases managed in short-stay or emergency department settings. Vaccination would avert 14 (95% CI: 10–19) rotavirus-associated deaths, 53,444 (95% CI: 37,622–72,882) hospitalizations and 169,949 (95% CI: 118,161–238,630) emergency department visits. Summary benefit–risk ratios for death and hospitalization are 71:1 and 1093:1, respectively.

Conclusions: The burden of severe rotavirus disease averted due to vaccination compared with the vaccine-associated intussusception events offers a side-by-side analysis of the benefits and potential risks. If an intussusception risk similar to that seen internationally exists in the United States, it is substantially exceeded by the benefits of rotavirus disease burden averted by vaccination.

© 2013 Lippincott Williams & Wilkins, Inc.

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