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Transpl Infect Dis ; 20(4): e12903, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29668078

RESUMO

BACKGROUND: Revaccination after hematopoietic stem cell transplantation (HSCT) is necessary to compensate for the loss of immunological memory. The aims of this study were to evaluate the adherence to revaccination schedule and the humoral immune response to different vaccine antigens in HSCT pediatric and young adult patients. METHODS: Patients submitted to HSCT for over 3 years were recruited. After written informed consent, a questionnaire was filled in, the vaccination card was analyzed, a blood sample was collected and tested by ELISA for diphtheria, Haemophilus influenzae type b (Hib), hepatitis A, hepatitis B, tetanus, measles, rubella, and varicella antibodies. RESULTS: Sixty-three patients (mean age at HSCT, 10.7 years) were evaluated. Forty-one (65%) were male; 34 (54%) had allogeneic and 29 (46%), autologous HSCT. Complete adherence to diphtheria revaccination was found in 79.4% patients and seropositivity was found in 92% of those who completed the revaccination schedule; for Hib, 68.3% adherence and 95.3% seropositivity were observed; for hepatitis A, 63.5% adherence and 92.5% seropositivity; for 3 doses of hepatitis B, 86.8% adherence and 79.2% seropositivity; for tetanus, 79.4% adherence and 100% seropositivity; for measles and rubella, 17.5% adherence and 100% seropositivity; for varicella, 7.9% adherence and 100% seropositivity. The existence of a Vaccination Center for Special Immunobiologicals in patients' municipality was positively associated with completed vaccine schedule; on the other hand, chronic GVHD was negatively associated with revaccination adherence. CONCLUSION: Hematopoietic stem cell transplantation patients showed good seropositivity rates after complete vaccination schedule. However, a low coverage rate was observed for live attenuated antigens.


Assuntos
Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Imunização Secundária/estatística & dados numéricos , Hospedeiro Imunocomprometido , Cooperação do Paciente/estatística & dados numéricos , Vacinação/estatística & dados numéricos , Adolescente , Adulto , Antígenos de Bactérias/sangue , Antígenos Virais/sangue , Infecções Bacterianas/imunologia , Infecções Bacterianas/prevenção & controle , Criança , Pré-Escolar , Feminino , Doença Enxerto-Hospedeiro/prevenção & controle , Humanos , Esquemas de Imunização , Imunização Secundária/normas , Terapia de Imunossupressão/efeitos adversos , Masculino , Testes Sorológicos , Inquéritos e Questionários , Vacinação/normas , Viroses/imunologia , Viroses/prevenção & controle , Adulto Jovem
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