Work

Rickettsia tillamookensis-like strain in brown dog ticks in Brazil

Year: 2026

Type: article

Abstract: Brown dog ticks (Rhipicephalus linnaei) collected from dogs in northeastern Brazil in 2015 tested positive for a rickettsial organism phylogenetically related to Rickettsia tillamookensis (referred to as R. tillamookensis-like). One of the dogs with R. tillamookensis-like-positive ticks tested positive for IgG antibodies to Rickettsia rickettsii antigens, suggesting a potential reaction to spotted fever group rickettsiae. Future research should assess whether the rickettsia detected herein is R. tillamookensis or a closely related species, its distribution, potential vectors, and possible pathogenicity to humans.

Source: Parasites & Vectors

DOI: 10.1186/s13071-026-07290-8

Authors: Lucas Lisboa Nunes Bonifácio, Kamila Gaudêncio da Silva Sales, Ennya Rafaella Neves Cardoso, Felipe da Silva Krawczak, Filipe Dantas-Torres

Institutions: Fundação Oswaldo Cruz, Universidade Federal de Goiás

Language: English

Topic: Vector-borne infectious diseases

Subfield: Parasitology

Field: Immunology and Microbiology

Domain: Life Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $3,090