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Group C streptococcal meningitis in an adult. Probable acquistion from a horse
Abstract:
Although group C streptococci are infrequent pathogens in man, they commonly cause disease in animals. Only recently have they been recognized as a causative agent in meningitis in man. To our knowledge, no previous report has documented a source for the infection. We treated a previously healthy young adult with group C streptococcal meningitis, who responded rapidly to antibiotic therapy. The same species (Streptococcus zooepidemicus) that was isolated from the CSF of the patient also grew from the pharynx of the patient's horse.
Insights
Group C streptococci can cause meningitis in humans, though rarely. This study identified a horse as the source of infection in a human meningitis case, highlighting a potential zoonotic transmission route.
Area of Science:
- Medical microbiology
- Infectious diseases
- Zoonotic infections
Background:
- Group C streptococci are common animal pathogens but rare causes of human disease.
- Group C streptococcal meningitis in humans is an emerging concern.
- The source of human infection is often undocumented.
Observation:
- A previously healthy young adult developed meningitis.
- Cerebrospinal fluid (CSF) cultures yielded Streptococcus zooepidemicus.
- The patient's horse also harbored Streptococcus zooepidemicus in its pharynx.
Findings:
- The same strain of Streptococcus zooepidemicus was isolated from both the patient and the horse.
- This case provides a documented source for group C streptococcal meningitis in a human.
- The patient responded well to antibiotic treatment.
Implications:
- This finding suggests a potential zoonotic transmission of group C streptococci from horses to humans.
- Highlights the importance of considering animal contact in cases of unexplained meningitis.
- Underscores the need for further investigation into zoonotic sources of bacterial meningitis.