RT Journal Article T1 Rickettsia spp. and Anaplasmataceae in Ticks From Domestic Animals in Northern Colombia A1 Badillo-Viloria, Maria A1 Mattar, Salim A1 Remesar Alonso, Susana A1 Rosa-Jaramillo, Steffania de la A1 García-Bocanegra, Ignacio A1 Miranda, Jorge A1 Portillo, Aránzazu A1 Cervera-Acedo, Cristina A1 Oteo, José Antonio A1 Cano-Terriza, David K1 Colombia K1 Public health K1 Rickettsial bacteria K1 Vectors K1 Zoonoses AB IntroductionTick-borne diseases have a significant impact on public and animal health and represent a considerable financial burden on livestock farming. However, in many regions of Latin America, comprehensive epidemiological data, including species identification, geographical distribution and molecular profiling of ticks and their associated pathogens, remain scarce. The aims of the present study were: 1) to establish the distribution of tick species collected from domestic animals and 2) to molecularly characterise the rickettsial bacteria present in ticks from the department of Atlántico, area Caribe, Colombia.MethodsBetween January 2021 and March 2022, ticks were collected from 216 cattle and 72 sympatric domestic animals (38 dogs, 31 equids and 3 goats) on 28 farms. Specimens were identified and grouped into 297 pools. Molecular detection and characterisation of the pathogens were carried out by targeting the partial gltA, ompA, ompB and 16S rRNA genes of Rickettsia and the partial 23S rRNA and 16S rRNA genes of Anaplasmataceae.ResultsA total of 1541 ticks were collected, and four species belonging to the genera Rhipicephalus, Dermacentor and Amblyomma were identified. A total of 137 out of 288 animals (47.6%) were infested with a mean infection rate of 9.7 ± SD 6.8 ticks per animal. Rickettsia spp. and Anaplasmataceae DNA were detected in 2.7% (MIR: 0.5%) and 15.5% (MIR: 0.3%) of the tick pools, respectively. The obtained sequences showed high nucleotide identity (99%–100%) with sequences of Candidatus Rickettsia colombiensis, Anaplasma marginale, Anaplasma platys, Ehrlichia canis and Ehrlichia minasensis.ConclusionOur data represent the first description of Dermacentor nitens and Amblyomma patinoi in the Atlantic region of the Colombian Caribbean. Considering the risk that the tick and rickettsial species represent for public and animal health, monitoring and control programmes are necessary to prevent the spread of tick-borne pathogenic bacteria to humans. PB Wiley YR 2025 FD 2025-04-03 LK https://hdl.handle.net/10347/42403 UL https://hdl.handle.net/10347/42403 LA eng NO Badillo-Viloria, M., Mattar, S., Remesar, S., de la Rosa-Jaramillo, S., García-Bocanegra, I., Miranda, J., Portillo, A., Cervera-Acedo, C., Oteo, J.A. and Cano-Terriza, D. (2025), Rickettsia spp. and Anaplasmataceae in Ticks From Domestic Animals in Northern Colombia. Zoonoses Public Health, 72: 421-434. https://doi.org/10.1111/zph.13219 NO This work was supported by Instituto de Salud Carlos III, Ministerio de Ciencia e Innovación and Unión Europea-NextGenerationEU, Researcher contract, grant 874 No. 462 of 2021 Ministry of Science, Technology and Innovation (MINCIENCIAS), Instituto de investigaciones biológicas del trópico-IIBT, Vice-Rectory of Research University Simón Bolívar in Barranquilla, Centre of Rickettsiosis and Arthropod-Borne Diseases (CRETAV), Centre for Biomedical Research from La Rioja (CIBIR) and Consorcio Centro de Investigación Biomédica en Red- CIBER (CB 2021/13/00083). DS Minerva RD 24 abr 2026