Journal
LEUKEMIA & LYMPHOMA
Volume 43, Issue 10, Pages 1967-1969Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/1042819021000015916
Keywords
Hacinophilus influenzae; conjugate vaccine; CLL; vaccination; antibody response
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We have recently demonstrated a moderate vaccination response rate of 43% against Haemophilus influenzae type b (Hib) conjugate vaccine among adult and elderly patients with chronic lymphocytic leukaemia (CLL). We now investigated demographic and immunological factors predicting the favourable response and protective antibody concentrations for Hib conjugate vaccine in CLL. Lower age was associated with protective pre- and post-vaccination antibody concentrations. High IgG1 and IgA concentrations were also associated with the protective efficacy. High IgM, in turn, was the best predictor of a significant vaccination response. Again, lower age seemed to be involved in this outcome. Judging from these findings, it would seem beneficial to vaccinate all CLL patients with conjugate vaccines at the presentation of the disease. Investigations of a new pneumococcal conjugate vaccine in CLL are warranted.
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