Detección de rickettsia rickettsii brump (RICKETTSIALES: RICKETTSIACEAE) en la garrapata café del perro rhipicephalus sanguineus latreille (IXODIDA: IXODIDAE) en la comarca lagunera, zona reemergente de fiebre manchada en México

Castillo-Martínez, Antonio; Cueto-Medina, Saraí M.; Valdés-Perezgasga, María Teresa; Sánchez-Ramos, Francisco Javier; López-Hernández, Javier; Hernández-Rodríguez, S.; Ortega‐Morales, Aldo I.

doi:10.21829/azm.2017.3321069

Cited by 6 publications

(5 citation statements)

References 9 publications

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“…In Latin America, DNA of R. rickettsii has been previously detected from R. sanguineus s.l. in Mexico (Castillo-Martínez et al, 2017), Panamá (Martínez-Caballero et al, 2018) and Brazil (Cunha et al, 2010). Although in the present study, R. rickettsii was not detected from R. sanguineus s.l., the presence of this tick in Cauca department, should aware the local authorities for a possible new endemic area for RMSF in Colombia.…”

Section: Discussioncontrasting

confidence: 78%

Estudio de la rickettsiosis transmitida por garrapatas en zonas rurales del departamento del Cauca y la importancia de Amblyomma patinoi en la epidemiología de la enfermedad

Díaz¹

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Some hard ticks' species can act as vectors of a wide variety of pathogens of human and animal importance such as Anaplasma, Ehrlichia and Rickettsia spp. In Colombia, a total of forty-six tick species have been described, and some of them have been implicated as vectors of some infectious agents. The department of Cauca is one of the thirty-two departments of Colombia. Most of its population lives in rural areas and depends on agriculture as the main economic activity, favoring exposure to ticks and tick-borne pathogens. Thus, the present study aimed to determine the tick species and tick-borne pathogens circulating in this region. From August to November 2017, ticks were collected from dogs, horses and cattle from eight rural areas of four municipalities in the department of Cauca. All collected ticks were classified according to taxonomic keys and organized in pools. DNA was extracted from all tick pools for molecular confirmation of tick species and detection of Anaplasma, Ehrlichia and Rickettsia spp. A total of 2809 ticks were collected which were grouped in 602 pools. Ticks were morphologically identified as Amblyomma cajennense sensu lato, Dermacentor nitens, Rhipicephalus microplus and Rhipicephalus sanguineus sensu lato. The molecular identity of A. cajennense s.l. was confirmed as Amblyomma patinoi. A total of 95% of the pools scored positive for members of the Anaplasmataceae family, of which, 7.8% and 7.3% were positive to Anaplasma and Ehrlichia spp., respectively, being identified as Anaplasma marginale, Ehrlichia minasensis and Ehrlichia canis; and 16.1% were positive for Rickettsia spp. with high identity for Rickettsia asembonensis, Rickettsia felis and Candidatus Rickettsia senegalensis. This is the first report describing the natural infection of ticks with rickettsial pathogens and the occurrence of A. patinoi ticks in Cauca department, Colombia.

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Section: Discussioncontrasting

confidence: 78%

Estudio de la rickettsiosis transmitida por garrapatas en zonas rurales del departamento del Cauca y la importancia de Amblyomma patinoi en la epidemiología de la enfermedad

Díaz¹

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“…In our study, unlike other scientific and press publications where a high incidence and mortality of RMSF due to R. rickettsii have been reported, RMSF was not detected in people exposed to tick bites. RMSF is endemic to Comarca Lagunera, and RMSF has been detected both in studies involving people and in studies involving dogs and their main ectoparasites (R. sanguineus) using different methods both in Mexico and in the region under study [8,9,49,50]. The mortality rate of RMSF in the state of Coahuila was 14.5% in 2012, 50% in 2017, 50% in 2020, 60% in 2021, and 69% in 2022, the highest in the past 10 years.…”

Section: Discussionmentioning

confidence: 99%

“…Comarca Lagunera, located in northern Mexico, is considered to be an endemic and re-emerging area of RMSF, a highly virulent disease with high mortality caused by Rickettsia rickettsii [8]. In fact, in this region, the incidence of RMSF ranges from three cases per 10,000 inhabitants, and the highest incidence occurred in Mexico in 2014 [9].…”

Section: Introductionmentioning

confidence: 99%

“…In fact, in this region, the incidence of RMSF ranges from three cases per 10,000 inhabitants, and the highest incidence occurred in Mexico in 2014 [9]. This health problem was attributed to the presence of street dogs associated with the brown dog tick Rhipicephalus sanguineus (sensu lato) [8,9]. In 2022, the highest fatality rate due to Rickettsia in Coahuila was recorded.…”

Section: Introductionmentioning

confidence: 99%

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Understanding the long-lasting associations among humans, neglected dogs, tick-borne diseases, and core blood bacteria-related pathogenic taxa using next-generation sequencing

Barraza-Guerrero,

García-De la Peña,

Meza-Herrera

et al. 2024

Int J One Health

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Background and Aim: Dogs are long-lasting companion animals, and ticks are the most common external parasites in dogs. An increase in the population of neglected domestic dogs has increased the risk of contact with ticks, especially in places where tick-borne diseases (TBDs) are endemic. We aimed to characterize the bacterial blood profiles of people who were either exposed (HE) or not exposed (HC) to tick bites using next-generation sequencing (NGS). Materials and Methods: In the present study, the bacteria observed in the blood of people exposed to tick bites were compared with those in the blood of people not exposed to tick bites in Northern Mexico. Human blood samples (n = 12) were analyzed, DNA was extracted, and the V3–V4 region of the 16S ribosomal RNA gene was amplified. In addition, NGS was performed on a MiSeq platform (Illumina), and the data were analyzed through Quantitative Insights into Microbial Ecology. Results: Differences in beta diversity were significant. In HEs, several potentially pathogenic bacterial taxa were found to be the most abundant: Kocuria ( x = 14.59%), Staphylococcus ( x = 3.05%), and Treponema ( x = 2.93%), in addition to Chlamydia, Clostridium, and Ehrlichia, which are considered TBDs. Conclusion: This study identified important differences in the bacterial composition of the HE and HC groups. In addition to Ehrlichia (a TBD considered a taxon), other bacterial pathogenic taxa, such as Chlamydia, Clostridium, Kocuria, Staphylococcus, and Treponema, were also observed in the tick bite-exposed group. Future studies with larger sample sizes should provide an improved understanding of the human blood microbiome profile by providing additional evidence of tick exposure, associated TBDs, and other pathogenic bacterial taxa. Keywords: Blood, Ehrlichia, microbiome, tick bites, tick-borne diseases, ticks.

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“…Rhipicephalus sanguineus ticks are common ectoparasites in dogs from warm or tropical areas. (14,15) Mexico City could be considered a geographically isolated site where ticks are not commonly distributed due to its altitude, temperate climate, and the Transversal Neovolcanic Belt that acts as a barrier. Nonetheless, this barrier could be disrupted by human activities such as animal transportation.…”

mentioning

confidence: 99%

Pet transportation or tourism: risk of moving zoonotic pathogens

Acevedo-Ramírez,

Campos-Juárez,

Elizalde-Monroy

et al. 2023

Vet Mex OA

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Pet transportation has become relevant. However, since adequate sanitary measures are not taken, pets can be carriers of pathogens, such as ticks which at the same time may turn into zoonotic agent vectors. Ticks are frequent ectoparasites in warm areas. However, they may be dispersed in temperate regions such as Mexico City (CDMX) and become responsible for other vector-borne diseases relevant to Veterinary Medicine and/or public health. It shows that moving animals from one place to another, including tourism with pets, can cause dispersion and proliferation of pathogens if the adequate sanitary measures are not taken. Therefore, this article is of great importance from a biological, ecological, public and veterinary health, since it shows the role of humans in the spread of pathogens particularly of Rhipicephalus sanguineus, its introduction to a site otherwise naturally free of them, and the adaptation mechanisms they may display to infect other hosts with the potential to transmit other emerging pathogens.

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Detección de rickettsia rickettsii brump (RICKETTSIALES: RICKETTSIACEAE) en la garrapata café del perro rhipicephalus sanguineus latreille (IXODIDA: IXODIDAE) en la comarca lagunera, zona reemergente de fiebre manchada en México

Cited by 6 publications

References 9 publications

Estudio de la rickettsiosis transmitida por garrapatas en zonas rurales del departamento del Cauca y la importancia de Amblyomma patinoi en la epidemiología de la enfermedad

Estudio de la rickettsiosis transmitida por garrapatas en zonas rurales del departamento del Cauca y la importancia de Amblyomma patinoi en la epidemiología de la enfermedad

Understanding the long-lasting associations among humans, neglected dogs, tick-borne diseases, and core blood bacteria-related pathogenic taxa using next-generation sequencing

Pet transportation or tourism: risk of moving zoonotic pathogens

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