Streptococcus agalactiae Meningitis in an Immunocompetent Adult: A Case Report and Literature Review.

Streptococcus agalactiae is a rare cause of meningitis in healthy adults. We herein report a case of culture-negative Streptococcus agalactiae meningitis in a healthy adult which was diagnosed using the FilmArray Meningitis and Encephalitis Panel. A healthy 22-year-old man presented with a fever, headache, and neck stiffness. Despite negative results from blood and cerebrospinal fluid cultures, the diagnosis was confirmed using the FilmArray Meningitis and Encephalitis Panel. The patient was treated with dexamethasone, vancomycin, and ceftriaxone, and thereafter recovered completely. This report highlights the importance of being aware that Streptococcus agalactiae meningitis can occur in healthy individuals, and summarizes these features.