Características microbiológicas do Streptococcus pneumoniae em pacientes internados por doença pneumocócica invasiva em hospital terciário

Abstract

Introduction: Respiratory infections are responsible for high morbidity and mortality in most countries. Streptococcus pneumoniae (pneumococcus) remains the main agent responsible for these infections, whether they are invasive or not. Invasive pneumococcal disease (IPD) is one in which pneumococcus is found in noble liquids, that is, previously sterile material. This study aimed to evaluate the microbiological characteristics of pneumococcus in patients admitted to a terciary hospital. Methods: A cross-sectional study with descriptive and analytical analysis, consisted of patients hospitalized at the São Lucas Hospital of PUCRS (HSL /PUCRS, Porto Alegre, RS) who had laboratory identification of Streptococcus pneumoniae in noble liquid from January 2005 to July 2016. Results: The majority of the population was male (58.6%) and had a mean age of 55 years (P25-75 31-71). The most frequent diagnostic was pneumonia and pneumococcus was more frequently recovered from blood culture. More than 25% of the studied population had some degree of known immunosuppression (25.3%). There was no difference in mortality when subdividing the population into having comorbidities and / or need for ICU/MV. The overall mortality of the sample was 31.1%. The most common serotypes were 19A, 3, 12F e 8. The theoretical vaccine coverage in the sample was 34.4% for the PPV23 and 50.5% for PCV13 and PPV23 associated. Conclusions: In this IPD sample, the most common serotypes were 19A, 3, 12F and 8, although it was not possible to relate them to a higher mortality ou need to ICU/MV.