6533b86dfe1ef96bd12cab0d

RESEARCH PRODUCT

Demonstration of spotted fever group rickettsiae in the tache noire of a healthy person in Sicily.

David H. WalkerM. R. MontenegroSerafino MansuetoR. Di LeoG. TringaliM. Maniscalco

subject

MaleFluorescent Antibody TechniqueRickettsiaceae InfectionsTickBoutonneuse FeverVirologySkin UlcermedicineHumansRickettsiaSicilybiologyTache noir de la sclerotiqueMiddle Agedbacterial infections and mycosesmedicine.diseasebiology.organism_classificationRashVirologyAntibodies BacterialSpotted feverBoutonneuse feverTiterInfectious DiseasesRickettsiaImmunologybacteriaParasitologymedicine.symptomRickettsia conorii

description

A human case of rickettsial infection occurred in Sicily following tick bite. The patient did not have fever, the typical nodular rash, or other symptoms of illness other than development of a tache noire containing spotted fever group rickettsiae, which were demonstrated by immunofluorescence. A high titer of antibodies of the IgG class suggests that the patient may have had previous exposure to Rickettsia conorii or a related spotted fever group rickettsia. An anamnestic response may be hypothesized to have conferred partial immunity, with resulting containment of rickettsiae at the site of inoculation.

10.4269/ajtmh.1984.33.479https://pubmed.ncbi.nlm.nih.gov/6375408