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Immune response to the 23-valent polysaccharide pneumococcal vaccine after the 7-valent conjugate vaccine in allogeneic stem cell transplant recipients: Results from the EBMT IDWP01 trial
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2010 (English)In: Vaccine, ISSN 0264-410X, E-ISSN 1873-2518, Vol. 28, no 15, 2730-2734 p.Article in journal (Refereed) Published
Abstract [en]

The current recommendations for active immunization after stem cell transplant (SCT) include 3 doses of 7-valent pneumococcal conjugate vaccine (PCV7) from 3 months after transplant, followed by a 23-valent polysaccharide pneumococcal vaccine (PPV23). However, until now, the immune response to PPV23 after PCV7 has not been assessed after SCT. In the EBMT IDWP01 trial, 101 patients received 1 dose of PPV23 at 12 or 18 months, both after 3 doses of PCV7. The efficacy of PPV23 was assessed 1 month later and at 24 months after transplant by the pneumococcal serotype 1 and 5 antibody levels. Serotype 1 and 5 are not included in PCV7. Although the geometric mean concentrations were significantly higher 1 month after PPV23, for both antigens, the response rates (>= 0.15 mu g/mL), in the range of 68-94%, were not different between groups independent of the assessment date. One PPV23 dose after 3 PCV7 doses, already known to increase the response to PCV7, also extends the serotype coverage given 12 or 18 months after transplant. (C) 2010 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2010. Vol. 28, no 15, 2730-2734 p.
Keyword [en]
Pneumococcal vaccine, Pneumococcal infection, Allogeneic stem cell transplantation
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-137097DOI: 10.1016/j.vaccine.2010.01.025ISI: 000276174600007OAI: oai:DiVA.org:uu-137097DiVA: diva2:377954
Available from: 2010-12-15 Created: 2010-12-15 Last updated: 2010-12-15Bibliographically approved

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