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Updated: Jun 21, 2026
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An Electroporation Method to Transform Rickettsia spp. with a Fluorescent Protein-Expressing Shuttle Vector in Tick Cell Lines
Published on: October 11, 2022
Rickettsia slovaca and R. raoultii in tick-borne Rickettsioses.
Philippe Parola1, Clarisse Rovery, Jean Marc Rolain
1Unité des Rickettsies, Marseille, France.
Emerging Infectious Diseases
|July 24, 2009
Summary
Tick-borne lymphadenopathy (TIBOLA), also known as Dermacentor-borne necrosis erythema and lymphadenopathy (DEBONEL), is linked to tick bites. Researchers identified Rickettsia slovaca and Rickettsia raoultii as the causes in most TIBOLA/DEBONEL patients.
Area of Science:
- Medical Entomology
- Infectious Diseases
- Dermatology
Background:
- Tick-borne lymphadenopathy (TIBOLA), or Dermacentor-borne necrosis erythema and lymphadenopathy (DEBONEL), is characterized by a tick bite, scalp eschar, and neck swollen lymph nodes.
- The specific causative agents of TIBOLA/DEBONEL have not been fully elucidated.
Purpose of the Study:
- To identify the etiologic agents responsible for TIBOLA/DEBONEL in affected patients.
- To determine the prevalence of specific Rickettsia species in TIBOLA/DEBONEL cases.
Main Methods:
- Clinical case evaluation of patients presenting with TIBOLA/DEBONEL symptoms.
- Molecular identification of bacterial DNA from patient samples to detect Rickettsia species.
Main Results:
- The etiologic agent was identified in 65% of 86 TIBOLA/DEBONEL patients.
- Rickettsia slovaca was identified in 57% (49/86) of cases.
- Rickettsia raoultii was identified in 8% (7/86) of cases.
Conclusions:
- Rickettsia slovaca and Rickettsia raoultii are the primary identified etiologic agents of TIBOLA/DEBONEL.
- These findings contribute to understanding the microbiology of tick-borne diseases in endemic regions.
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