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  • Title: Flea-borne rickettsioses in the north of Caldas province, Colombia.
    Author: Hidalgo M, Montoya V, Martínez A, Mercado M, De la Ossa A, Vélez C, Estrada G, Pérez JE, Faccini-Martínez AA, Labruna MB, Valbuena G.
    Journal: Vector Borne Zoonotic Dis; 2013 May; 13(5):289-94. PubMed ID: 23473218.
    Abstract:
    Rickettsia typhi and R. felis are the etiological agents of murine typhus and flea-borne spotted fever, respectively. Both are emerging acute febrile zoonotic diseases for which fleas are vectors; they also have similar clinical characteristics and global distribution. In 2005, we identified the circulation of murine typhus in 6 towns within the mountainous coffee-growing area north of Caldas, Colombia. We now report the specific seroprevalence against R. typhi and R. felis, and associated risk factors in 7 towns of this province. The combined seroprevalence against the 2 flea-borne rickettsioses is the highest yet reported in the literature: 71.7% (17.8% for R. felis, 25.2% for R. typhi, and 28.7% for both). We also report a prospective analysis of 26 patients with a febrile illness compatible with rickettsioses, including murine typhus; 9 of these patients had a rickettsiosis. This supports our sero-epidemiological results and highlights the diagnostic complexity of febrile syndromes in this region.
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