Coinfection meningitis caused by Lysinibacillus sphaericus and Brevundimonas diminuta in a pediatric patient with cerebral atrophy: a case report

This case highlights that even immunocompetent hosts with indwelling neurological devices are susceptible to opportunistic infections by environmental pathogens. Molecular diagnostic techniques are crucial for confirming rare pathogens, and intrathecal administration can serve as a vital adjunctive strategy when systemic therapy is ineffective.