Bacterial Agents Detected in 418 Ticks Removed from Humans during 2014-2021, France

Monitoring of tickborne diseases is critical for prevention and management. We analyzed 418 ticks removed from 359 patients during 2014-2021 in Marseille, France, for identification and bacteria detection. Using morphology, molecular methods, or matrix-assisted laser desorption/ionization time-of-fl...

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Bibliographic Details
Published in:Emerging infectious diseases 2023-04, Vol.29 (4), p.701-710
Main Authors: Jumpertz, Marie, Sevestre, Jacques, Luciani, Léa, Houhamdi, Linda, Fournier, Pierre-Edouard, Parola, Philippe
Format: Article
Language:English
Subjects:
Analysis
Animals
Arachnids
Arthropods
Bacteria
Bacteria, Pathogenic
Bacterial Agents Detected in 418 Ticks Removed from Humans during 2014–2021, France
Biopsy
Bites and stings
Borrelia - genetics
Causes of
DNA, Bacterial - genetics
Erythema
Ethylenediaminetetraacetic acid
Fever
France - epidemiology
Genetic testing
Humans
Identification and classification
Infections
Infectious diseases
Insect bites
Ionization
Ions
Ixodes - microbiology
Ixodidae - microbiology
Laboratories
Lyme Disease
Mass spectrometry
parasites
Pathogens
Patients
Rickettsia
Rickettsia - genetics
Risk factors
Scientific imaging
Skin
Statistics
Tick-borne diseases
Tick-Borne Diseases - epidemiology
ticks
vector-borne infections
zoonoses
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Summary:Monitoring of tickborne diseases is critical for prevention and management. We analyzed 418 ticks removed from 359 patients during 2014-2021 in Marseille, France, for identification and bacteria detection. Using morphology, molecular methods, or matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, we identified 197 (47%) Ixodes, 136 (33%) Dermacentor, 67 (16%) Rhipicephalus, 8 (2%) Hyalomma, 6 (1%) Amblyomma, 2 (0.5%) Argas, and 2 (0.5%) Haemaphysalis tick species. We also detected bacterial DNA in 241 (58%) ticks. The most frequent bacterial pathogens were Rickettsia raoultii (17%) and R. slovaca (13%) in Dermacentor ticks, Borrelia spp. (9%) in Ixodes ticks, and R. massiliae (16%) in Rhipicephalus ticks. Among patients who were bitten, 107 had symptoms, and tickborne diseases were diagnosed in 26, including scalp eschar and neck lymphadenopathy after tick bite and Lyme borrelioses. Rapid tick and bacteria identification using a combination of methods can substantially contribute to clinical diagnosis, treatment, and surveillance of tickborne diseases.
ISSN:1080-6040
1080-6059
DOI:10.3201/eid2904.221572