The bacterial genus Borrelia comprises vector-borne spirochetes that have been classified into three major groups: the relapsing fever group (RFG), the Borrelia burgdorferi Johnson, Schmid, Hyde, Steigerwalt & Brenner sensu lato group (Bbsl), and the reptile-monotreme group (RMG). All three groups have been associated mainly with ticks and wild animals, especially rodents, birds, and reptiles. Here, we searched for Borrelia infection among 99 vampire bats [Desmodus rotundus (É. Geoffroy)] (Chiroptera: Phyllostomidae) from the Brazilian semiarid region. Through molecular investigation of bat internal organs, haplotypes of a potentially novel Borrelia organism were detected in 5% (5/99) of the bats. Borrelia DNA was detected in the liver, blood, spleen, kidney and brain, suggesting a systemic infection. Phylogenetic analyses inferred from partial sequences of the borrelial rrs and flaB genes indicated that the vampire bat-associated Borrelia sp. of this study form a monophyletic group with a newly reported Borrelia associated with a Colombia bat, distinct from the three main currently recognized groups of Borrelia spp., Bbsl, RFG, and RMG. These novel bat-associated Borrelia spp. from South America might have arisen through an independent event along the borrelial evolutionary history, since previous molecular reports of Borrelia organisms in bats or bat-associated ticks from Africa, Europe, and North America were all classified in the RFG.
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21 October 2022
Novel Borrelia Genotypes from Brazil Indicate a New Group of Borrelia spp. Associated with South American Bats
Felipe R. Jorge,
Sebastián Muñoz-Leal,
Glauber M. B. de Oliveira,
Maria Carolina A. Serpa,
Meylling M. L. Magalhães,
Lorena M. B. de Oliveira,
Francisco B. P. Moura,
Bruno M. Teixeira,
Marcelo B. Labruna
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Journal of Medical Entomology
Vol. 60 • No. 1
January 2023
Vol. 60 • No. 1
January 2023
Caatinga
Ceará
Desmodus rotundus
spirochete
tick-borne diseases