Vaccine Responses in Adult Hematopoietic Stem Cell Transplant Recipients: A Comprehensive Review.
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Article
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Other
Language
en
Date
2021-12-06
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Title
Vaccine Responses in Adult Hematopoietic Stem Cell Transplant Recipients: A Comprehensive Review.
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Cancers 2021;13(23):6140
Abstract
Consensus on timing of post-hematopoietic stem cell transplantation (HSCT) vaccination is currently lacking and is therefore assessed in this review. PubMed was searched systematically for articles concerning vaccination post-HSCT and included a basis in predefined criteria. To enable comparison, data were extracted and tables were constructed per vaccine, displaying vaccine response as either seroprotection or seroconversion for allogeneic HSCT (alloHSCT) and autologous HSCT (autoHSCT) separately. A total of 33 studies were included with 1914 patients in total: 1654 alloHSCT recipients and 260 autoHSCT recipients. In alloHSCT recipients, influenza vaccine at 7-48 months post-transplant resulted in responses of 10-97%. After 12 months post-transplant, responses were >45%. Pneumococcal vaccination 3-25 months post-transplant resulted in responses of 43-99%, with the response increasing with time. Diphtheria, tetanus, pertussis, poliomyelitis and Haemophilus influenzae type b at 6-17 months post-transplant: 26-100%. Meningococcal vaccination at 12 months post-transplant: 65%. Hepatitis B vaccine at 6-23 months post-transplant: 40-94%. Measles, mumps and rubella at 41-69 months post-transplant: 19-72%. In general, autoHSCT recipients obtained slightly higher responses compared with alloHSCT recipients. Conclusively, responses to childhood immunization vaccines post-HSCT are poor in comparison with healthy individuals. Therefore, evaluation of response might be indicated. Timing of revaccination is essential for optimal response. An individualized approach might be necessary for optimizing vaccine responses.