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Infectio

versão impressa ISSN 0123-9392

Resumo

RODRIGUEZ, Mabel Karina; AGUDELO, Clara Inés  e  DUARTE, Carolina. Invasive Haemophilus influenzae isolates in children younger than 5 years: Distribution of serotypes and antimicrobial sensitivity, SIREVA II , Colombia 2002-2013 . Infect. [online]. 2015, vol.19, n.2, pp.67-74. ISSN 0123-9392.  http://dx.doi.org/10.1016/j.infect.2014.12.005.

Objective: To analyze 2002-2013 surveillance data on the serotypes and antimicrobial sensitivity of invasive Haemophilus influenzae ( H. influenzae ) isolates in children younger than 60 months. Materials and methods: We analyzed the demographic data, source and associated diseases ofinvasive HI isolates from cases recorded from 2002-2013. All isolates had been bacteriologically confirmed and had data on their serotype, which was determined by the slide agglutination method and polymerase chain reaction. The antimicrobial sensitivity patterns were determined by minimum inhibitory concentration of ampicillin, trimethoprim-sulfamethoxazole, chloramp-henicol, cefuroxime and ceftriaxone. The analysis was conducted in 3-year periods. Results: According to invasive disease, 50.5% of patients had meningitis, 23.5% had pneumonia,19.5% had sepsis and bacteremia, 2.0% had other diseases and 4.5% lacked data. By origin, 55 isolates each were received from Bogota and Antioquia, 24 were from Risaralda, 15 were from Valle, 11 were from Santander and 40 came from 14 departments. The predominant serotype was Hib (40.5%), followed by HiNT (38.0%), Hia (17.5%), Hid (2.0%), Hif (1.5%) and Hie (0.5%). Ofthe total isolates, 12.0% were resistant to ampicillin; 16.5% to trimethoprim-sulfamethoxazole,1.0% to chloramphenicol and 0.5% to ceftriaxone. All isolates were sensitive to cefuroxime andrifampicin. Conclusions: Laboratory surveillance is a voluntary passive surveillance; however, the low number of isolates helped determine that Hib continues to circulate in this population and that there are other H. influenzae serotypes that cause invasive disease. Therefore, surveillance of this pathogen needs to be maintained and reinforced.

Palavras-chave : Haemophilus influenzae; Serotypes; Surveillance; Colombia; Younger than 60months.

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