Metagenomic next-generation sequencing identified a brain abscess caused by mixed oral anaerobe infection: A case report.

brain abscesses are relatively rare. Here, we report our treatment of an anaerobic brain abscess caused by a mixed infection of , and diagnosed by metagenomic next-generation sequencing (mNGS). This is the first reported case of in a brain abscess. This case highlights the possibility that oral anaerobic microbes can cause a brain abscess and demonstrates that mNGS has the potential to be deployed to provide rapid infection diagnosis and rationalize antimicrobial therapy for brain abscesses.