Adults With Diabetes Hospitalized With Pandemic Influenza A(H1N1)pdm09—U.S. 2009

In the U.S., diabetes was common among adults hospitalized with pandemic influenza A(H1N1)pdm09 virus (pH1N1) infection, with a prevalence of 15–25% in national case series (1–3). Despite the influenza burden among patients with diabetes, clinical data are limited.Through two U.S. pH1N1 hospitalizations case series conducted during the spring and fall of 2009 (1,2), medical records of adults ≥18 years old hospitalized with laboratory-confirmed pH1N1 infection were reviewed. Data were collected as part of public health emergency response and deemed not to be research. We compared clinical features between patients with and without diabetes and performed a Mantel-Haenszel analysis, controlling for obesity (BMI ≥30 kg/m2).Among 319 adults hospitalized with pH1N1 infection, 72 (23%) had diabetes, including 33 of 169 patients (20%) in the spring and 39 of 150 patients (26%) in the fall of 2009. Patients …