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Background: Several immune system abnormalities have been noted in patients with chronic heart failure (CHF) including autoantibody production and abnormalities in tumor necrosis factor, interleukin 2, interleukin 6, natural killer cells, helper/inducer lymphocytes, lymphocyte reactivity, and subtherapeutic responses to the influenza vaccination. Patients with CHF have a higher risk of nosocomial...
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