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Abstract
Chronic lymphocytic leukemia (CLL) is a well-defined mature B-cell neoplasm associated with increased susceptibility to infections. Two major options in prevention of infections in CLL, intravenous gammaglobulin treatment and antimicrobial chemoprophylaxis, have not resulted in satisfactory outcome. A third strategy, antimicrobial vaccination, is the topic of this minireview. We collected articles and their references concerning CLL vaccination from the Medline database starting from 1966 and thirteen relevant studies were found. Plain bacterial polysaccharide vaccines would seem to be ineffective in antibody formation in patients with CLL. However, protein and conjugate vaccines appear to be more immunogenic and their responses may be further enhanced with ranitidine adjuvant treatment. New well-designed investigations are needed to develop appropriate vaccination strategies and evaluate vaccination efficacy in infection morbidity and mortality in CLL.