Evolution of Antimicrobial Susceptibility to Penicillin in Invasive Strains of Streptococcus pneumoniae during 2007-2021 in Madrid, Spain

The use of pneumococcal conjugate vaccines has affected the epidemiology and distribution of serotypes causing Invasive Pneumococcal Disease (IPD). The aim of this study was to analyze the evolution of the phenotypical profiles of antimicrobial susceptibility to penicillin (PEN) in all IPD strains i...

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Bibliographic Details
Published in:Antibiotics (Basel) 2023-02, Vol.12 (2), p.289
Main Authors: de Miguel, Sara, Pérez-Abeledo, Marta, Ramos, Belén, García, Luis, Arce, Araceli, Martínez-Arce, Rodrigo, Yuste, Jose, Sanz, Juan Carlos
Format: Article
Language:English
Subjects:
Antibiotics
Antiinfectives and antibacterials
Antimicrobial agents
antimicrobial susceptibility
Clinical isolates
Conjugates
Drug resistance
Epidemiology
Evolution
Immunization
Pediatrics
Penicillin
resistance
Serotypes
Streptococcus infections
Streptococcus pneumoniae
Surveillance
Vaccines
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Summary:The use of pneumococcal conjugate vaccines has affected the epidemiology and distribution of serotypes causing Invasive Pneumococcal Disease (IPD). The aim of this study was to analyze the evolution of the phenotypical profiles of antimicrobial susceptibility to penicillin (PEN) in all IPD strains isolated in Madrid, Spain, during 2007-2021. In total, 7133 invasive clinical isolates were characterized between 2007 and 2021. Levels of PENR and PNSSDR were 2.0% and 24.2%, respectively. In addition, 94.4% of all the PENR belonged to four serotypes, including 11A (33.6%), 19A (30.8%), 14 (20.3%) and 9V (9.8%). All the strains of serotype 11A, which is a non-PCV13 serotype, were detected after the year 2011. Serotypes 6C, 15A, 23B, 24F, 35B, 19F, 16F, 6B, 23F, 24B, 24A, 15F and a limited number of strains of serogroups 16 and 24 (non-typed at serotype level) were associated with PNSSDR ( < 0.05). PNSSDR strains of non-PCV13 serotypes 11A, 24F, 23B, 24B, 23A and 16F were more frequent from 2014 to 2021. The changes in serotype distribution associated with the use of conjugate vaccines had caused in our region the emergence of non-PCV13 pneumococcal strains with different PENR or PNSSDR patterns. The emergence of serotype 11A resistant to penicillin as the most important non-PCV13 serotype is a worrisome event with marked relevance from the clinical and epidemiological perspective.
ISSN:2079-6382
2079-6382
DOI:10.3390/antibiotics12020289