Abstract
Peritonsillar abscesses (PTAs) are typically caused by group A Streptococcus or mixed oral flora. Gardnerella vaginalis is a part of the normal vaginal microbiome, and overgrowth can cause bacterial vaginosis. We present a case of recurrent PTA with G. vaginalis superinfection, which occurred after the patient performed oral sex on a female after incision and drainage of her initial PTA. The patient continued to have recurrent PTAs until G. vaginalis was identified, and antibiotic coverage was broadened to cover both group A Streptococcus and G. vaginalis. This case highlights the importance of culturing PTA aspirate for directed antibiosis in persistent or recurrent infections. The rare superinfection also raises the question of advising abstinence from oral-genital contact after oral procedures to minimize risk of superinfection.
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