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Detection of Rickettsia typhi in Rhipicephalus sanguineus s.l. and Amblyomma mixtum in South of Mexico
Ist Teil von
Salud pública de México, 2020-07, Vol.62 (4), p.358-363
Ort / Verlag
Mexico
Erscheinungsjahr
2020
Link zum Volltext
Quelle
Electronic Journals Library
Beschreibungen/Notizen
To determine the presence of Rickettsia typhi in Rhipicephalus sanguineus s.l. and Amblyomma mixtum in southern Mexico.
Ticks were collected in humans and domestic animals. The presence of Rickettsia was determined by PCR and sequencing.
10/39 work vials amplified fragments of the gltA, htrA and ompB genes. On 7/10 from Rh. sanguineus s.l. collected from dogs and in 3/10 of A. mixtum collected from horse and human. Sequencing indicated R. typhi in Rh. sanguineus and A. mixtum with 100% homology (LS992663.1) for a region of the htrA gene and 99% (LS992663.1) with the regions of the gltA and OmpB genes. The minimum infection rate (TMI) for R. typhi was 3.88.
Rhipicephalus sanguineus s.l. and Amblyomma mixtum are naturally infected with R. typhi in Southern Mexico.