Abstract

Our study was carried out using Ixodes ricinus ticks collected from cattle from Tizi-Ouzou and Dermacentor marginatus ticks collected from the vegetation of the Blida region, a tourist site, both regions situated in northern Algeria. The results of real-time quantitative PCR (qPCR) specific for a partial sequence of the citrate synthase gene (gltA) indicate that Rickettsia spp. were present in 11/23 (48%) and 4/9 (44%) of the examined ticks from Tizi-Ouzou and Blida, respectively. The sequences of Rickettsia helvetica and Ri. monacensis were found in I. ricinus ticks using gltA primers. In addition, Ri. slovaca was detected based on the sequences of the gltA and the outer membrane protein (OmpA) genes in D. marginatus ticks. DNA sequencing to identify the species revealed for the first time the presence of Ri. helvetica in I. ricinus ticks and Ri. slovaca in D. marginatus ticks from Algeria and confirmed the presence of Ri. monacensis.

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