A Case Series Demonstrating the Spectrum of Invasive Methicillin-Sensitive Staphylococcus aureus (MSSA) Disease

Area of Science:

• Pediatric Infectious Diseases
• Bacteriology
• Clinical Medicine

Background:

• Staphylococcus aureus is a common human colonizer but causes severe invasive disease.
• Invasive Methicillin-susceptible Staphylococcus aureus (MSSA) disease in children is infrequent, particularly in Sub-Saharan Africa.
• Early diagnosis of invasive MSSA disease is critical due to high mortality, especially from septic shock.

Purpose of the Study:

• To report on cases of invasive MSSA disease in previously healthy children.
• To highlight common clinical manifestations and management strategies.
• To emphasize the importance of early diagnosis and intervention.

Main Methods:

• Case series reporting on four previously healthy children with invasive MSSA disease.
• Clinical manifestations, diagnostic methods (blood culture, antimicrobial sensitivity testing), and therapeutic interventions were reviewed.
• Treatment was tailored based on antimicrobial sensitivity results.

Main Results:

• All four children presented with fever and skin lesions, indicative of multisystem involvement.
• Aggressive multifactorial therapy, including tailored antibiotics and intensive care, was required.
• Despite prolonged hospital stays, appropriate management led to a favorable prognosis.

Conclusions:

• Early recognition of invasive MSSA disease in children, especially with skin lesions and fever, is vital.
• Prompt management, including intensive care and source control, significantly improves outcomes.
• Suspicion for staphylococcal infection should be raised in febrile infants with skin lesions and tender joints.