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This study aims to identify and characterize the presence of Rickettsia spp. in Triatoma rubrofasciata and related fauna.

June 15, 2026Parasites & VectorsOpen Access

First molecular evidence of Rickettsia spp. in Triatoma rubrofasciata: implications for vector ecology and zoonotic transmission

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This study aims to identify and characterize the presence of Rickettsia spp. in Triatoma rubrofasciata and related fauna.
Screened 362 T. rubrofasciata specimens and their sympatric hosts for Rickettsia DNA using nested PCR targeting six genes.
Conducted phylogenetic analysis on positive samples to determine genetic relationships.
Assessed prevalence in fleas, ticks, and wild rodents alongside T. rubrofasciata.
Rickettsia DNA detected in 8 (2.2%, 8/362) T. rubrofasciata specimens, with R. felis found in 4 samples; others undetermined.
Higher prevalence in fleas (57.8%) and wild rats (4.3%); distinct agent in ticks (29.4%).
Key loci analysis indicated host-adaptive evolution with genomic variation in ompA between vector- and rodent-associated strains.

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Randomized trial investigates Rickettsia presence in Triatoma rubrofasciata, suggesting ecological impacts.

Qin et al. (2026) studied this question.

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