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the first report of rickettsia spp. in amblyomma nodosum in the state of mato grosso do sul, brazil.ticks are vectors of various pathogens, including rickettsia spp., which are responsible for causing an emerging disease of global significance. in the present study, an epidemiological survey was performed to identify rickettsia spp. of the spotted fever group (sfg) in ticks and wild hosts in a native forest adjacent to livestock farming activity. the ticks and blood were evaluated by a hemolymph test and by pcr using the primers cs78 and cs323, which target a partial sequence of the enzyme cit ...201323084365
rickettsial infection in ticks from wild birds from cerrado and the pantanal region of mato grosso, midwestern brazil.the involvement of different species of ticks and wild animals, such as birds, play an important role in the epidemiology of tick-borne diseases. birds may serve as reservoirs for some tick-borne diseases, and may carry and spread hematophagous ectoparasites mechanically. this study aimed to show the diversity of ticks on birds and molecular detection of rickettsial infection in ticks from pantanal and cerrado, two similar brazilian biomes characterized by hydrological seasons. during two years, ...201526232933
molecular detection of rickettsia rhipicephali and other spotted fever group rickettsia species in amblyomma ticks infesting wild birds in the state of minas gerais, brazil.the current study evaluated parasitism of wild birds by ticks in a fragment of atlantic forest in the state of minas gerais, brazil, and examined the ticks for rickettsial agents. birds were captured during 2014 and 2015 and ticks were identified by sequencing fragments of the 16s and 12s ribosomal dna. among 260 birds representing 19 families and 52 species, a total of 69 (26.5%) were found to be infested by larvae (ll) and/or nymphs (nn) of amblyomma longirostre (koch, 1844) (45 ll, 4 nn), amb ...201727745888
rickettsial agents in avian ixodid ticks in northeast brazil.birds are important in the maintenance and spread of ticks and tick-borne diseases. in this context we screened birds in the atlantic forest north of the são francisco river and caatinga in northeast brazil. in the atlantic forest amblyomma longirostre, amblyomma nodosum, amblyomma varium and amblyomma auricularium were identified. a. longirostre was infected by "candidatus rickettsia amblyommii" and a. nodosum by a rickettsia parkeri-like agent. in caatinga, amblyomma parvum and a. auricularium ...201525800099
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