Retrospective analysis of health and economic burden among commercially-insured individuals diagnosed with invasive meningococcal disease in the United States.

Invasive meningococcal disease (IMD) is a life-threatening yet vaccine-preventable disease, with vaccines approved and recommended in the United States by the Centers for Disease Control and Prevention. This study assessed complications, mortality, healthcare resource utilization (HCRU), and healthcare costs among a sample of commercially-insured individuals living in the United States who experienced IMD. We used retrospective data from large claims databases limited to individuals with IMD covered by commercial health plans between January 2010-March 2022. Health outcomes, HCRU, and healthcare costs were analyzed during the acute (index date to 30 days post-hospital discharge) and post-acute (end of acute phase to end of follow-up period) phases. Among 618 IMD cases identified, the most common acute phase complications were severe brain damage, renal failure, and autoimmune disease. The most common post-acute phase complications were autoimmune disease, arthralgia, and renal failure. Acute phase HCRU ranged from 72.7 (95% confidence interval [CI] 19.81-186.12) intensive care unit (ICU) stays to 12,102.9 (95% CI 11,201.07-13,058.00) surgeries per 1,000 patient-years. Post-acute phase HCRU ranged from 3.6 (95% CI 1.18-8.50) ICU stays to 7,808.3 (95% CI 7,661.22-7,957.54) specialty physician visits per 1,000 patient-years. Patients with IMD incurred average healthcare costs of $60,866.23 and $145,883.65 during the acute and post-acute phases, respectively. Negative health outcomes and high HCRU and costs were observed among commercially-insured patients with IMD. Our findings suggest that IMD immunization efforts and healthcare interventions targeting education on vaccine recommendations to healthcare providers and patients could help prevent IMD and reduce disease burden.