Demonstration of Borrelia burgdorferi sensu stricto infection in ticks from the northeast of Mexico

Gordillo-Pérez, Guadalupe; Vargas, Margarita; Solórzano-Santos, Fortino; Rivera, Angel Eustorgio; Polaco, Óscar J.; Alvarado, L; Muñoz, Onofre; Torres, Javier

doi:10.1111/j.1469-0691.2009.02776.x

Cited by 42 publications

(37 citation statements)

References 16 publications

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“…These states in Mexico are south of Webb County, TX. In Tamaulipas and Nuevo León, “ B. burgdorferi sensu stricto” was detected in 8.4% of ticks, including A. cajennense, Ixodes scapularis Say 1821, Ixodes texanus Banks, 1909, and Dermacentor andersoni Stiles, 1908 (Gordilla-Perez et al 2009). A. cajennense sensu lato has also been suggested to have an unculturable spirochete-like bacteria which causes a Lyme disease-like syndrome was in Brazil in regions where no Ixodes ticks are present (Mantovani et al 2007, da Costa et al 2007).…”

Section: Discussionmentioning

confidence: 99%

Vector potential and population dynamics for Amblyomma inornatum

Medlin

Cohen

Beck

2015

Ticks and Tick-borne Diseases

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We studied the natural life cycle of Amblyomma inornatum and its vector potential in South Texas. This tick is distributed throughout South Texas and most of Central America. A. inornatum represented 1.91% of the ticks collected by carbon dioxide traps during a study of free-living ticks in the Tamaulipan Biotic Province in South Texas. The life cycle of A. inornatum in South Texas showed a clear seasonal pattern consistent with one generation per year. Nymphs emerged in the spring with a peak in February through May. Adults emerged in the summer with a peak in July through September. Detection of A. inornatum larvae was negatively correlated with saturation deficit and positively correlated with rain in the previous few months. Adult activity was positively correlated with temperature and rain in the previous five weeks. Using PCR we detected the presence of species related to Candidatus Borrelia lonestari, Borrelia burgdorferi, Rickettsia species (Candidatus Rickettsia amblyommii), Ehrlichia chaffeensis, and another Ehrlichia related to Ehrlichia ewingii. Finally we sequenced the mitochondrial 16S rRNA genes and found that A. inornatum is most closely related to Amblyomma parvum. This is the first report of the life cycle, vector potential and phylogeny of A. inornatum.

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Section: Discussionmentioning

confidence: 99%

Vector potential and population dynamics for Amblyomma inornatum

Medlin

Cohen

Beck

2015

Ticks and Tick-borne Diseases

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“…Moreover, reports of LD in Mexico continue to increase [14-16]. In this geographic region I. scapularis is also considered as the main vector of B. burgdorferi , although the involvement of other hard tick species as competent vectors is suspected [17]. …”

Section: Introductionmentioning

confidence: 99%

“…In some parts of the world the ecology and epidemiology of LD remain to be fully understood. For instance, a LD-like syndrome has been described in Brazil [49], and ticks other than I. scapularis have been associated with the transmission of B. burgdorferi in Mexico [17]. Thus, LD is considered a transboundary zoonotic disease in that it can reach epidemic proportions in different regions of the globe regardless of political borders [6].…”

Section: Introductionmentioning

confidence: 99%

“…The Mexican states of Tamaulipas, Nuevo León, and Coahuila in the Texas-Mexico border region presented the highest sero-prevalence (6.4%) compared with the rest of the country [58]. Also, Ixodes ticks infected with B. burgdorferi sensu stricto occur in the same states [17], and the infection has been recently documented in mouse reservoirs [59] as well as in WTD [60]. Distribution models of potential tick vectors in Mexico point to a wide distribution range that overlaps not only northeastern Mexican states along the border with the US, but also extends to central Mexico [59,61].…”

Section: Introductionmentioning

confidence: 99%

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Implications of climate change on the distribution of the tick vector Ixodes scapularis and risk for Lyme disease in the Texas-Mexico transboundary region

Feria-Arroyo¹,

Castro-Arellano

Gordillo-Pérez³

et al. 2014

Parasites Vectors

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BackgroundDisease risk maps are important tools that help ascertain the likelihood of exposure to specific infectious agents. Understanding how climate change may affect the suitability of habitats for ticks will improve the accuracy of risk maps of tick-borne pathogen transmission in humans and domestic animal populations. Lyme disease (LD) is the most prevalent arthropod borne disease in the US and Europe. The bacterium Borrelia burgdorferi causes LD and it is transmitted to humans and other mammalian hosts through the bite of infected Ixodes ticks. LD risk maps in the transboundary region between the U.S. and Mexico are lacking. Moreover, none of the published studies that evaluated the effect of climate change in the spatial and temporal distribution of I. scapularis have focused on this region.MethodsThe area of study included Texas and a portion of northeast Mexico. This area is referred herein as the Texas-Mexico transboundary region. Tick samples were obtained from various vertebrate hosts in the region under study. Ticks identified as I. scapularis were processed to obtain DNA and to determine if they were infected with B. burgdorferi using PCR. A maximum entropy approach (MAXENT) was used to forecast the present and future (2050) distribution of B. burgdorferi-infected I. scapularis in the Texas-Mexico transboundary region by correlating geographic data with climatic variables.ResultsOf the 1235 tick samples collected, 109 were identified as I. scapularis. Infection with B. burgdorferi was detected in 45% of the I. scapularis ticks collected. The model presented here indicates a wide distribution for I. scapularis, with higher probability of occurrence along the Gulf of Mexico coast. Results of the modeling approach applied predict that habitat suitable for the distribution of I. scapularis in the Texas-Mexico transboundary region will remain relatively stable until 2050.ConclusionsThe Texas-Mexico transboundary region appears to be part of a continuum in the pathogenic landscape of LD. Forecasting based on climate trends provides a tool to adapt strategies in the near future to mitigate the impact of LD related to its distribution and risk for transmission to human populations in the Mexico-US transboundary region.

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“…B. burgdorferi sensu stricto (s.s.) is the predominant genospecies in the United States, whereas Borrelia afzelii and Borrelia garinii are more prevalent in Europe and Asia [1][2][3][4] . In Mexico, recent reports have documented the presence of B. burgdorferi in the vector, the reservoir and in clinical cases, suggesting that Lyme disease is an emerging infection in our country [5][6][7][8][9][10] . Lyme borreliosis has a broad range of clinical manifestations, affecting the skin, joints, heart, and musculoskeletal and nervous systems.…”

Section: Introductionmentioning

confidence: 99%