Sunday, January 18, 2026

Disease Isolates of Streptococcus pseudopneumoniae and Non-Typeable S. pneumoniae Presumptively Identified as Atypical S. pneumoniae in Spain

Authors: Dora Rolo, Alexandra S. Simões, Arnau Domenech, Asunción Fenoll, Josefina Liñares, Hermínia de Lencastre, Carmen Ardanuy, Raquel Sá-Leão

DOI: 10.1371/journal.pone.0057047

Abstract Summary

Spanish researchers found that half of atypical pneumococcal isolates were actually S. pseudopneumoniae, a different species often misidentified in clinical labs. Concerningly, these bacteria showed high antibiotic resistance (61% to penicillin, 43% to erythromycin) and caused invasive infections. The study highlights the need for better diagnostic methods to distinguish true pneumococci from look-alikes.

Why Brain? 🧠

Atypical pneumococcal isolates in Spain were often misidentified; half were actually S. pseudopneumoniae, including antibiotic-resistant strains causing invasive infections, highlighting diagnostic challenges.

License: CC BY.


The image is AI-generated for illustrative purposes only. Courtesy of Midjourney.

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