In America, the presence of Rhipicephalus sanguineus sensu stricto and Rhipicephalus linnaei has been confirmed. Both species are found in sympatry in the southern United States, northern Mexico, southern Brazil, and Argentina. The objective of this work is to evaluate the projection of the potential distribution of the ecological niche of Rhipicephalus sanguineus sensu lato in two climate change scenarios in Mexico and the border with Central America and the United States. Initially, a database of personal collections of the authors, GBIF, Institute of Epidemiological Diagnosis and Reference, and scientific articles was built. The ENMs were projected for the current period and two future scenarios: RCP and SSP used for the kuenm R package, the ecological niche of R. sanguineus s.l. It is distributed throughout the Mexico and Texas (United States), along with the border areas between Central America, Mexico, and the United States. Finally, it is observed that the ecological niche of R. sanguineus s.l. in the current period coincides in three degrees with the routes of human migration. Based on this information, and mainly on the flow of migrants from Central America to the United States, the risk of a greater gene flow in this area increases, so the risk relating to this border is a latent point that must be analyzed.

About 45 % of human deaths from infectious diseases are caused by enteropathogens, among them Salmonella, Shigella and Escherichia stand out. This group of bacteria has been poorly studied in bats and their ecosystem. The aim of this work was to evaluate the presence of enterobacteria in bats associated with a contaminated body of water in Xalapa, México. Two mist nets were placed along the stream bank of the Honduras River. The bat species were identified, and fecal samples were obtained from them, which were grown in triplicate in Salmonella-Shigella medium, incubated at 35 °C for 48 hr. Additionally, a sample of water from the stream was isolated, also in triplicate. The bacterial species were identified by colorimetry. Four specimens of Sturnira hondurensis were collected. Strains from Salmonella enterica (2 individuals), Shigella flexneri (2 individuals), and colony-forming unit (CFU) suspected of Escherichia coli (3 individuals) were isolated. Two coinfections of S. enterica - CFU suspected of E. coli was reported. All these enterobacteria were isolated from the stream water. This study represents the first report of the isolation of S. enterica and S. flexneri in Mexican bats, specifically in S. hondurensis. Finally, the importance of good wastewater management is highlighted to prevent bodies of water from being potential sources of infection for wildlife, as well as the need for multidisciplinary studies with the “One Health” approach.