Abstract
Coagulase-negative Staphylococci (CoNS) are among the most abundant members of human skin microbiome. CoNS have lately been recognized as substantial agents in plethora of infections, especially nosocomial infections in preterm infants and immunocompromised patients. Staphylococcus haemolyticus is the second most common species isolated from blood, and identification is further hindered when there is a deviation in morphology from the classical one. Here, we report an uncommon case of multidrug resistant mucoid S. hemolyticus isolated from blood in a patient of polytrauma. The patient was managed with ceftriaxone-sulbactam, gentamicin, and meropenem as empirical therapy, which was subsequently changed to intravenous vancomycin. The patient showed favorable response to treatment. Mucoid isolates are known to be more virulent and multi-drug resistant than the classical morphotypes. We also conducted systematic review to decipher the prevalence of mucoid S. hemolyticus and linezolid (LZD) resistance in the same. This case highlights the significance of awareness of mucoid phenotypes of Gram-positive cocci for clinical microbiologists to reach accurate identification. Resistance to LZD further underscores the need of restriction policies in hospitals and to roll out antimicrobial stewardship program stringently, so that the growing resistance could be contained.
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All authors contributed to the study conception and design. Study was conceptualized by LG, VG, and PG. Material preparation, data collection, and analysis were performed by SS, AA, and PG. The first draft of the manuscript was written by PG and SS and approved by PG, LG, and VG. All authors read and approved the final manuscript.
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Singhal, L., Gupta, V., Sharma, S. et al. Mucoid Staphylococcus haemolyticus: an unheeded multidrug-resistant pathogen. Braz J Microbiol 54, 191–198 (2023). https://doi.org/10.1007/s42770-022-00901-3
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DOI: https://doi.org/10.1007/s42770-022-00901-3