Influenza immunization rates in the Intermountain End-Stage Renal Disease Network (Network 15).

Billing data from the Health Care Financing Administration (HCFA) indicated that the influenza immunization rates for dialysis patients in the United States do not meet the goal of 60% set by Healthy People 2000, and fall significantly short of the goal of 90% of all Medicare beneficiaries as outlined in Healthy People 2010. Influenza and pneumonia together are the sixth leading cause of death in the United States. Despite the known benefits of influenza vaccination in reducing morbidity and mortality, only 40% to 50% of high-risk patients are immunized. Although HCFA/Medicare billing data may not provide the best measurement of actual practice, it is currently the only measure available from any national source. The data suggest that there is a need for improvement. Because the HCFA/Medicare rates were based only on those immunizations for which Medicare was billed, End-Stage Renal Disease Network 15 embarked on a project to determine a more accurate rate of immunization within the Network based on information provided by the dialysis facilities. Influenza vaccination rates for the winter 1998 flu season ranged from 51.5% to 84.9% for the states in the Network; the rate for the whole Network was 74.6%. The HCFA/Medicare billed influenza immunization rates were 26.5 to 45.6 percentage points lower.