This report describes the first establishment of five isolates of R. conorii Israeli tick typhus (ITT) strain from Rhipicephalus sanguineus ticks in different regions of Portugal. Ticks were collected on two separate expeditions that took place in Bragança, Montesinho Natural Park, and Portalegre City.
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Wide distribution of Mediterranean and African spotted fever agents and the first identification of Israeli spotted fever agent in ticks in Uganda.
PLoS Negl Trop Dis
July 2023
Makerere University, College of Veterinary Medicine, Kampala, Uganda.
Rickettsia microorganisms are causative agents of several neglected emerging infectious diseases in humans transmitted by arthropods including ticks. In this study, ticks were collected from four geographical regions of Uganda and pooled in sizes of 1-179 ticks based on location, tick species, life stage, host, and time of collection. Then, they were tested by real-time PCR for Rickettsia species with primers targeting gltA, 17kDa and ompA genes, followed by Sanger sequencing of the 17kDa and ompA genes.
View Article and Find Full Text PDFHaemophagocytic Lymphohistiocytosis as a Complication of Israeli Spotted Fever.
Eur J Case Rep Intern Med
January 2022
Internal Medicine Department, Hospital de Cascais Dr. José de Almeida, Alcabideche, Portugal.
Unlabelled: spp. human infection is endemic in Portugal in the form of Mediterranean spotted fever caused by subsp. and Israeli spotted fever (ISF) caused by subsp.
View Article and Find Full Text PDFA severe case of Israeli spotted fever with pleural effusion in Italy.
Infection
February 2022
Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, 90127, Palermo, Italy.
Background: The most common Italian rickettsiosis is Mediterranean Spotted Fever (MSF). MSF is commonly associated with a symptom triad consisting of fever, cutaneous rash, and inoculation eschar. The rash is usually maculopapular but, especially in severe presentations, may be petechial.
View Article and Find Full Text PDFIn a multicenter, nationwide, retrospective study of patients hospitalized with spotted fever group rickettsiosis in Israel during 2010-2019, we identified 42 cases, of which 36 were autochthonous. The most prevalent species was the Rickettsia conorii Israeli tick typhus strain (n = 33, 79%); infection with this species necessitated intensive care for 52% of patients and was associated with a 30% fatality rate. A history of tick bite was rare, found for only 5% of patients; eschar was found in 12%; and leukocytosis was more common than leukopenia.
View Article and Find Full Text PDFNew Spotted Fever Group Isolate, Identified by Sequence Analysis of Conserved Genomic Regions.
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December 2019
Israel Institute for Biological Research, P.O. Box 19, Ness-Ziona 74100, Israel.
The clinical features of spotted fever group (SFG) induced disease range from a mild to severe illness. The clinical complexity is even greater due to the fact that the disease can be caused by different species with varying degrees of virulence. Current knowledge asserts that the Israeli SFG (ISF) strain is the only human pathogenic SFG member in Israel.
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