Rare case of lung abscess.

genus comprises of obligate anaerobic, gram-negative bacteria that are commensal organisms of oral cavity, gut and vaginal mucosa. Although many species have well-established pathogenicity with respect to pulmonary infections, rarely has been isolated as a cause of lung abscess. We present a rare case of left lower lobe lung abscess due to identified using next-generation sequencing of microbial cell-free DNA testing. A brief review of the literature regarding species pulmonary infections, use of next-generation cell-free DNA testing early in the evaluation, antibiotic susceptibility and resistance is also a part of this report.