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Related Experiment Video

Updated: May 21, 2026

An Electroporation Method to Transform Rickettsia spp. with a Fluorescent Protein-Expressing Shuttle Vector in Tick Cell Lines

An Electroporation Method to Transform Rickettsia spp. with a Fluorescent Protein-Expressing Shuttle Vector in Tick Cell Lines

Published on: October 11, 2022

Imported rickettsioses in Italy.

Anna Beltrame¹, Andrea Angheben, Stefania Casolari

¹Clinic of Infectious Diseases, S.M. Misericordia University Hospital, Udine, Italy. beltrame.anna@aoud.sanita.fvg.it

Travel Medicine and Infectious Disease

|June 29, 2012

Summary

Rickettsia africae is the most common cause of rickettsiosis in Italian travelers returning from Africa. Early empirical treatment based on travel history and clinical signs like eschars is recommended.

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Area of Science:

Medical Microbiology
Infectious Diseases
Epidemiology

Background:

Rickettsioses are uncommon in Italy, with Rickettsia conorii typically causing Mediterranean spotted fever.
Autochthonous cases are rare, and imported cases require careful investigation.

Purpose of the Study:

To investigate epidemiological and clinical features of tick-borne spotted fever group rickettsiosis.
To analyze cases acquired abroad and within Italy.

Main Methods:

Prospective serum collection from suspected rickettsiosis patients.
Diagnosis confirmed via immunofluorescence assay at a WHO collaborating center.
Comparison of clinical features between confirmed and suspected cases.

Main Results:

Eight out of 26 suspected cases were confirmed.
All confirmed cases involved travelers returning from southern Africa, with Rickettsia africae being predominant (75%).
Inoculation eschars were significantly more frequent in confirmed rickettsiosis patients (p=0.004).

Conclusions:

Rickettsia africae is the most frequent rickettsia identified in Italian travelers.
Physicians should consider empirical treatment for suspected rickettsioses based on travel history (e.g., Africa) and clinical findings (e.g., eschars) before laboratory confirmation.