[Vertebral osteomyelitis due to Streptococcus agalactiae ST-17]

Area of Science:

• Infectious Diseases
• Microbiology
• Clinical Medicine

Background:

• Streptococcus agalactiae, or Group B Streptococcus (GBS), is primarily associated with neonatal and maternal infections.
• Invasive GBS infections are increasingly reported in non-pregnant adults, particularly those with comorbidities like diabetes or cancer.
• Vertebral osteomyelitis caused by GBS is an uncommon manifestation of invasive disease.

Observation:

• A case of vertebral osteomyelitis caused by Streptococcus agalactiae in a 49-year-old male patient with no apparent risk factors is presented.
• The infecting strain was identified as serotype III, sequence type ST-17, indicating specific virulence characteristics.
• The patient received prolonged antibiotic therapy.

Findings:

• The study confirms the potential for Streptococcus agalactiae to cause vertebral osteomyelitis in otherwise healthy adults.
• Virulence factor assessment identified the strain as serotype III, ST-17.
• The patient experienced a favorable outcome following extended antibiotic treatment.

Implications:

• This case underscores the importance of considering GBS as a causative agent for vertebral osteomyelitis, even in the absence of typical risk factors.
• Early diagnosis and appropriate management, including prolonged antibiotic therapy, are crucial for favorable outcomes.
• Further research may elucidate the specific mechanisms and risk factors associated with GBS vertebral osteomyelitis in the adult population.