Bartonella quintana Endocarditis Associated With Head Lice in a Canadian Indigenous Youth.

Bartonella quintana is a rare but important cause of culture-negative endocarditis, classically associated with body lice infestation. We report the first known pediatric case of Bartonella quintana endocarditis associated with head lice. The importance of sending targeted testing for this organism in at-risk patients, ideally on tissue specimens, is emphasized.