While studying chronic verruga peruana infections in Peru from 2003, we isolated a novel Bartonella agent, which we propose be named Candidatus Bartonella ancashi. This case reveals the inherent weakness of relying solely on clinical syndromes for diagnosis and underscores the need for a new diagnostic paradigm in developing settings.
Keywords: Bartonella; Bartonellosis; Candidatus Bartonella ancashi; Peru; bacteria; emerging infection; pathogen discovery; vector-borne infections; verruga peruana.