CLL patients CLL patients earlier included in the Pneumococcal vaccination study 0887x1-20003 (EudraCT No: 2009-012642-22), who have received either PCV13 or PPSV23 are eligible for evaluation of the long-term immune response. The median age of the patient group was at inclusion 70 years (range 46-87) with an equal number men and women (65/63). The same patients are eligible for revaccination if they do not meet any exclusion criteria. Ongoing or recent CLL specific treatment is not an exclusion criteria. Controls A control group (n=40) of immunocompetent subjects will be recruited in Region Örebro County. The control group will be matched to the CLL group by age and gender. For inclusion they should have been vaccinated with either PCV13 (n=20) or PPSV23 (n=20) approximately 3-5 years ago and not meet any exclusion criteria. They will subsequently be eligible for long-term immune response and revaccination according to the study protocol.

CLL patients CLL patients earlier included in the Pneumococcal vaccination study 0887x1-20003 (EudraCT No: 2009-012642-22), who have received either PCV13 or PPSV23 are eligible for evaluation of the long-term immune response. The median age of the patient group was at inclusion 70 years (range 46-87) with an equal number men and women (65/63). The same patients are eligible for revaccination if they do not meet any exclusion criteria. Ongoing or recent CLL specific treatment is not an exclusion criteria. Controls A control group (n=40) of immunocompetent subjects will be recruited in Region Örebro County. The control group will be matched to the CLL group by age and gender. For inclusion they should have been vaccinated with either PCV13 (n=20) or PPSV23 (n=20) approximately 3-5 years ago and not meet any exclusion criteria. They will subsequently be eligible for long-term immune response and revaccination according to the study protocol.