Once a Known Veterinary Pathogen, Now a Forgotten Zoonosis. Case Report of An Invasive Staphylococcus intermedius Group Infection

Abstract

Introduction: Staphylococcus intermedius group (SIG), a known veterinary pathogen with the potential for zoonotic human infections, comprises S. intermedius, S. pseudointermedius, and S. delphini, which are not easily distinguishable. Without the proper equipment and procedures, it cannot be distinguished from Staphylococcus aureus (SAu), which causes underestimation of its true incidence. Case Presentation: A 52-year-old male with diabetes presented with complaints of fever and malaise. He developed respiratory failure and altered mental status; hence, intensive care was provided to him. Blood cultures and bronchoalveolar lavage culture developed methicillin-resistant SIG. Despite rapid adjustment of empiric antibiotic therapy, he died of multiple organ failure. Conclusions: Incorporating knowledge about this new pathogen and its aggressiveness into daily clinical practice can, through a high index of suspicion and detailed anamnesis, reduce misdiagnoses.

Staphylococcal species composition in the skin microbiota of domestic pigeons (Columba livia domestica)

“…S . intermedius can be involved in soft tissue wound infections in humans, particularly in dog bite wounds, and more rarely in endocarditis, pneumonia, and brain abscesses [ 43 ]. Similarly, infections caused by S .…”

“…Of note, S. intermedius strains are not pathogenic for the pigeons, they might cause infections in other animals, particularly in dogs [42]. S. intermedius can be involved in soft tissue wound infections in humans, particularly in dog bite wounds, and more rarely in endocarditis, pneumonia, and brain abscesses [43]. Similarly, infections caused by S. hyicus are usually rare.…”