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Updated: Feb 8, 2026

An Electroporation Method to Transform Rickettsia spp. with a Fluorescent Protein-Expressing Shuttle Vector in Tick Cell Lines
Published on: October 11, 2022
[Autochthonous case of spotted fever caused by Rickettsia parkeri in Ensenada, Buenos Aires]
Pedro Villalba Apestegui1, Santiago Nava2, Julia Brignone3
1Servicio de Infectología, Hospital Escuela de Agudos Dr. Ramón Madariaga, Posadas, Misiones, Argentina.
Abstract:
We present a case of spotted fever occurred in an adult residing in Ensenada, Buenos Aires province in February 2016. The patient presented with an acute febrile syndrome associated with a skin necrotic lesion on the left leg secondary to a tick bite. The general symptoms were a maculopapular rash, headache, myalgia, and arthralgias. Seroconversion of anti-Rickettsia specific IgG antibodies confirmed recent infection. The nucleotidic and aminoacidic sequences of a gltA gen fragment matched 100% the sequences of R. parkeri strains from Argentina and other countries of America. The patient responded well to treatment with doxycycline.
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