Streptococcus pneumoniae

Objective. To study the population and genetic structure of S. pneumoniae isolated from children with cystic fibrosis (CF) and congenital malformations of the bronchi and lungs (CM) over the period 2011 to 2021, their serotype diversity in pre-vaccination and post-vaccination periods and susceptibility to antimicrobials. Materials and Methods. A total of 140 S. pneumoniae isolates (during 2011-2021) from respiratory samples of patients with CM or CF were included in the study.

Objective. Seroyping of the Streptococcus pneumoniae strains obtained from patients with invasive and non-invasive forms of pneumococcal infection circulating in Russia using whole-genome sequencing. Materials and Methods. The 144 invasive and 90 non-invasive S. pneumoniae strains isolated in 2002– 2023 during the multicenter epidemiological study «PEGASus» were investigated. Real-time PCR and whole-genome sequencing were used to determine serotypes. The 16 serotyping targets were examined by PCR technique. Whole-genome sequencing was performed on the Illumina equipment.

Objective. To evaluate in vitro activity of various macrolide antibiotics against a current collection of clinical isolates of Streptococcus pneumoniae and Streptococcus pyogenes isolated from patients with community-acquired infections in different regions of the Russian Federation. Materials and Methods. A total of 350 clinical isolates from patients with community-acquired infections, including 200 S. pneumoniae and 150 S. pyogenes, were included in the study. To further evaluate the in vitro activity of 16-member macrolides against erythromycin-resistant isolates (MIC ≥ 0.

Сeftaroline fosamil is a fifth-generation cephalosporin and a unique β-lactam and the only currently registered in the Russian Federation cephalosporin with activity against MRSA. Сeftaroline is approved for use in pediatric practice for the …

Objective. To determine the minimum inhibitory concentrations of thiamphenicol and thiamphenicol glycinate acetylcysteinate against clinically significant microorganisms and determine their efficacy against microbial biofilms. Materials and Methods. This study included 48 clinical strains isolated from the sputum of patients with respiratory tract infections (16 S. pneumoniae, K. pneumoniae and S. aureus strains). Antimicrobial susceptibility testing was performed using broth microdilution method. Biofilm formation culturing with antibiotics, N-acetylcysteine and their combinations was assessed in Mueller-Hinton broth and brain heart broth in 96-well plates.

Objective. To determine in vitro activity of oral III generation cephalosporin cefpodoxime against clinical isolates of Haemophilus influenzae, Streptococcus pneumoniae and Streptococcus pyogenes isolated from patients with community-acquired respiratory tract infections in different regions of the Russian Federation. Materials and Methods. The study included isolates of bacterial pathogens of community-acquired respiratory tract infections isolated from outpatients and hospitalized patients in different regions of the Russian Federation. A total of 558 isolates were included in the study, including 184 isolates of H.

Pneumococcal conjugate vaccines contain a limited number of serotype-specific antigens of S. pneumoniae. It is important for vaccination programmes effectiveness assessment to control a variety of circulating S. pneumoniae serotypes. This review …

Objective. To determine in vitro activity of thiamphenicol and other clinically available antimicrobials against clinical isolates of Haemophilus influenzae, Streptococcus pneumoniae and Streptococcus pyogenes. Materials and Methods. We included in the study 875 clinical isolates from 20 Russian cities during 2018–2019. Among tested strains, 126 were H. influenzae, 389 – S. pneumoniae, 360 – S. pyogenes. Antimicrobial susceptibility testing was performed using broth microdilution method according to ISO 20776-1:2006. AST results were interpreted according to EUCAST v.

The review discusses national clinical practice guidelines for pneumococcal vaccination in different countries, existing approaches to adult immunization, and highlights key results of the most significant clinical studies and metaanalyses on the …

Objective. To evaluate antimicrobial resistance patterns of clinical Streptococcus pneumoniae isolates from different regions of Russia during 2014–2017. Materials and Methods. We included in the study 519 clinical S. pneumoniae isolates from 18 Russian cities. Susceptibility testing was performed by reference broth microdilution method (ISO 20776-1:2006). Susceptibility testing results were interpreted according to EUCAST v.9.0 breakpoints. Results. Using EUCAST non-meningeal interpretation criteria, 65.1% of isolates tested were susceptible (S) to penicillin; in addition 28.