Streptococcus oralis Meningitis

Area of Science:

• Microbiology
• Infectious Diseases
• Neurology

Background:

• Streptococcus oralis is a commensal bacterium found in the oropharyngeal tract.
• While generally of low pathogenicity, S. oralis can cause severe infections in specific circumstances.
• Poor oral hygiene is a risk factor for invasive S. oralis infections.

Purpose of the Study:

• To emphasize the potential of S. oralis to cause meningitis.
• To highlight the association between poor oral hygiene and S. oralis meningitis.
• To report a successful treatment outcome for S. oralis meningitis.

Main Methods:

• Case report of a 53-year-old male patient presenting with meningitis symptoms.
• Cerebrospinal fluid analysis for pathogen identification.
• Administration of empiric antibiotics and dexamethasone, followed by targeted therapy.

Main Results:

• S. oralis was identified as the causative agent of meningitis.
• The patient presented with fever, headache, and drowsiness.
• Treatment with ceftriaxone resulted in complete patient recovery.

Conclusions:

• Viridans streptococci, including S. oralis, can cause meningitis and endocarditis, particularly in patients with poor dental hygiene.
• Empiric antibiotic therapy is effective for Streptococcus viridans meningitis.
• Screening for endocarditis is recommended for patients with any form of Streptococcus viridans infection.