Streptococcus agalactiae Meningoencephalitis Revealing Spondylodiscitis in a Diabetic Patient

<i>Streptococcus agalactiae</i> is a well-known pathogen responsible for neonatal and postpartum infections. An increase in the incidence of invasive <i>Streptococcus agalactiae</i> infections has been observed in non-pregnant adults. Involvement of the central nervous system in adults remains rare, and its association with spondylodiscitis is exceptional. We report the case of a 65-year-old diabetic patient who presented with acute meningoencephalitis. Microbiological analysis of cerebrospinal fluid and blood cultures identified <i>Streptococcus agalactiae</i>. Despite initial clinical improvement, the patient developed paraparesis and low back pain. Subsequent lumbar imaging revealed L3-L4-L5 spondylodiscitis with epidural and soft tissue abscess. The spinal involvement was presumably caused by the same pathogen. This case highlights the importance of considering the involvement of <i>Streptococcus agalactiae</i> in adult central nervous system infections, especially in the presence of comorbidities.