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Salud pública Méx ; 53(3): 207-211, mayo-jun. 2011. tab
Article in English | LILACS | ID: lil-598661

ABSTRACT

OBJECTIVE: The aim of this study was to identify the etiology and the serotypes of S. pneumoniae (Sp) in Mexican children with acute otitis media (AOM). MATERIALS AND METHODS: The study includessamples frompatientsdiagnosed with AOM at the Federico Gomez Children's Hospital of Mexico (2002-2003),with positive culture for Sp bacteriologically confirmed in middle ear fluid obtained by tympanocentesis. All Sp were serotyped. A total of 138 samples from 135 children with AOM were included. RESULTS: Sp was isolated in 72 samples from 70 children. Sixty (85.7 percent) were previously healthy and 10 (14.3 percent) were immunocompromised. The most common serotypes were 6B and 19F (16.67 percent), and 6 A, 14 and 23F (15.27 percent). CONCLUSION: The distribution of serotypes among the children with AOM in the study is similar to that reported in developing cities, and 63.9 percent of the isolated serotypes are found to be included in the 7-Valent Pneumococcal Conjugate Vaccine (PCV), 68.1 percent in the 10-Valent PCV and 83.3 percent in 13-Valent PCV.


OBJETIVO: Conocer la etiología y serotipos de S. pneumoniae (Sp) en niños mexicanos, con otitis media aguda (OMA). MATERIAL Y MÉTODOS: Se incluyeron las muestras de pacientes con OMA del Hospital Infantil de México Federico Gómez (2002-2003), con cultivo positivo para Sp, (bacteriológicamente confirmados en el líquido del oído medio obtenido por timpanocentesis). Todos los Sp. fueron serotipificados. Se incluyeron 138 muestras de 135 niños con OMA. RESULTADOS: Sp. se aisló en 72 muestras de 70 niños: 60 (85.7 por ciento) eran previamente sanos y 10 (14.3 por ciento) eran inmunocomprometidos. Los serotipos más frecuentes fueron 6B y 19F (16.67 por ciento), y 6 A, 14 y 23F (15.27 por ciento). CONCLUSIONES: La distribución de los serotipos en niños con otitis media aguda fue similar a la reportada en ciudades en desarrollo y se observó que 63.9 por ciento de los serotipos aislados están incluidos en la vacuna conjugada 7-valente, 68.1 por ciento en la 10-valente y 83.3 por ciento en la 13-valente.


Subject(s)
Child , Child, Preschool , Humans , Infant , Ear, Middle/microbiology , Otitis Media/microbiology , Pneumococcal Infections/microbiology , Streptococcus pneumoniae/classification , Acute Disease , Cross-Sectional Studies , Developing Countries , Hospitals, Pediatric/statistics & numerical data , Immunocompromised Host , Mexico/epidemiology , Otitis Media/epidemiology , Pneumococcal Infections/epidemiology , Pneumococcal Vaccines/immunology , Retrospective Studies , Serotyping , Streptococcus pneumoniae/isolation & purification , Vaccination/statistics & numerical data , Vaccines, Conjugate/immunology , Virulence
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