title: Occult polymicrobial endocarditis with Haemophilus parainfluenzae.
mesh_terms: D000328:Adult; D004697:Endocarditis, Bacterial / Q000209:etiology*; D005260:Female; D006190:Haemophilus; D006192:Haemophilus Infections; D006801:Humans; D008297:Male; D010510:Periodontal Diseases / Q000150:complications; D015819:Substance Abuse, Intravenous / Q000150:complications