Pneumococcal disease in adult solid organ transplantation recipients |
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Authors: | Cristina Roca-Oporto Marí a Eugenia Pachó n-Iba ez Jeró nimo Pachó n Elisa Cordero |
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Institution: | Cristina Roca-Oporto, María Eugenia Pachón-Ibañez, Jerónimo Pachón, Elisa Cordero, Clinic Unit of Infectious Diseases, Microbiology and Preventive Medicine, Institute of Biomedicine of Seville, University Hospital Virgen del Rocío/CSIC/University of Seville, 41013 Seville, Spain |
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Abstract: | In solid organ transplant(SOT) recipients, Streptococcus pneumoniae can cause substantial morbidityand mortality ranging from non-invasive to invasive diseases, including pneumonia, bacteremia, and meningitis, with a risk of invasive pneumococcal disease 12 times higher than that observed in non-immunocompromised patients. Moreover, pneumococcal infection has been related to graft dysfunction. Several factors have been involved in the risk of pneumococcal disease in SOT recipients, such as type of transplant, time since transplantation, influenza activity, and nasopharyngeal colonization. Pneumococcal vaccination is recommended for all SOT recipients with 23-valent pneumococcal polysaccharides vaccine. Although immunological rate response is appropriate, it is lower than in the rest of the population, decreases with time, and its clinical efficacy is variable. Booster strategy with 7-valent pneumococcal conjugate vaccine has not shown benefit in this population. Despite its relevance, there are few studies focused on invasive pneumococcal disease in SOT recipients. Further studies addressing clinical, microbiological, and epidemiological data of pneumococcal disease in the transplant setting as well as new strategies for improving the protection of SOT recipients are warranted. |
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Keywords: | Transplantation Pneumococcal infections Pneumococcal serotypes Nasopharyngeal carriage Pneumococcal vaccine |
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