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Boletín médico del Hospital Infantil de México

versión impresa ISSN 1665-1146


ORTIZ-TREJO, Juan Manuel et al. Adverse reactions in association with Bacillus Calmette-Guerin immunization in Mexican children. Bol. Med. Hosp. Infant. Mex. [online]. 2008, vol.65, n.5, pp. 358-366. ISSN 1665-1146.

Introduction. The vaccine BCG (bacillus Calmette and Guerin) prevents severe forms of tuberculosis. Adverse effects are rare and such as local abscesses, lymphadenopathy, skeletal muscle injury and disseminated disease; they usually occur months later and persist for several weeks. Adverse effects are related to technical implementation, doses, age and state of immunosuppression. Methods. A retrospective study assessed the frequency of clinical manifestations secondary to BCG, in children attended over 5 years and 8 months in a government clinic in the city of Zacatecas, Mexico. Demographic, clinical, perinatal, and anthropometric characteristics were determined. Results. Twenty-two cases were identified with an adverse event frequency of 1.47 x 10-3 (IC95%: 0.8, 2.1 x 10-3), 12 male/ 10 female children. The most frequent event was lymphadenopathy (10 cases), followed by persistent pustules (5), persistent nodule (4) and ulcer (2 cases). Immunosuppression was identified in 4 cases. Conclusions. The prevalence of adverse effects is low. There was no association with sex, height or weight at birth, neither with maternal background. The most frequent event was lymphadenopathy (IC95%: 22.4). Hyperkeratosis was the most important post-treatment sequela. BCG is a vaccine with few adverse events; they are clinically well resolved with no important sequelae.

Palabras llave : Adverse effects; immunization; BCG vaccine.

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