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Revista Peruana de Medicina Experimental y Salud Publica

versión impresa ISSN 1726-4634

Resumen

CASTRO, Juan D et al. Antibiotic resistance and distribution of serotypes of invasive pneumococcal strains isolated from hospitalized adults in Lima, Peru. Rev. perú. med. exp. salud publica [online]. 2017, vol.34, n.4, pp.633-641. ISSN 1726-4634.  http://dx.doi.org/10.17843/rpmesp.2017.344.2884.

Objectives. To describe the clinical characteristics, antibiotic resistance, and distribution of serotypes of bacterial strains that cause invasive pneumococcal disease (IPD) in adults. Materials and methods. Case series. Pneumococcal strains were isolated from 2009 to 2011 from hospitalized adult patients with IPD in five hospitals and two laboratories located in Lima. Results. The analysis of data from 43 patients with IPD indicated that 58.2% were older than 60 years. The most common complications were pneumonia (39.5%), meningitis (30.2%), bacteremia (13.9%), peritonitis (11.6%), and septic arthritis (4.8%). The mortality rate was 28.9%, and 72.7% of cases involved patients older than 60 years. The pneumococcal strains were resistant to the following antibiotics: penicillin, 0% and 30.8% in non-meningitis and meningitis strains, respectively; ceftriaxone, 4.5% and 16.7% in non-meningitis and meningitis strains, respectively; trimethoprim/sulfamethoxazole, 69.0%; and erythromycin, 35.7%. The most common serotypes were 19F, 23F, 6B, 14, and 6C. The percentage of vaccine strains was 44.2% for the 7-valent conjugate pneumococcal vaccine (PCV7) and PCV10, 51.2% for PCV13, and 60.4% for the 23-valent polysaccharide vaccine (PPV23). Conclusions. Pneumococcus is an important pathogen in adults, particularly in older adults, owing to its high mortality rate.

Palabras clave : Streptococcus Pneumoniae; adult; inpatient; Peru; antimicrobial drug resistance.

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