Brazilian Border Research Articles

Planning for autonomy and conservation: ‘Life Plans’ and communal reserves in the Amazonian borders of Peru

ABSTRACT State-promoted biodiversity conservation can either align with or diverge from Indigenous Peoples’ priorities, knowledge, and self-determined development paths. Drawing on fieldwork at the Amazon borders of Brazil, Colombia, Ecuador, and Peru, this paper examines Indigenous organizations’ efforts to uphold territorial rights and pursue planning with Indigenous values in landscapes earmarked for conservation. The key question centers on how ‘border configurations’ affect grassroots planning and conservation focusing on the experience of Peruvian Secoya (Siékopai) People. Using expert interviews and ethnographic methods, the paper finds that conservation agencies risk losing credibility without genuine efforts toward social equity and well-being, constrained by mandates that often neglect local needs. The success of Life Plans depends on solidarity networks that balance conservation with viable economic alternatives, equitable power dynamics, and access to services. Ultimately, the paper shows that Life Plans empower Indigenous organizations, offering meaningful options for political self-representation within Amazonian conservation.

¿Soy de Ribera o Rivera?: Sociolinguistic /b/-/v/ Variation in Rivera Spanish

This study investigates the impact of language contact on three generations of bilingual Spanish and Uruguayan Portuguese speakers in Rivera City, Uruguay, located on the Uruguayan–Brazilian border. Focusing on the confirmed presence of the Portuguese-like/b/and/v/phonemic distinction, and the lower frequency of the Montevideo Spanish-like approximantized stops in Riverense Spanish (RS), the research examines the production of <v> and <b> in 29 female Rivera Spanish bilinguals belonging to different age groups. More specifically, the aim was to see if the previously observed differential use of language-specific phonological variants could be accounted for by using precise measurements of relative intensity, duration, and voicing coupled with a distributional analysis of realizations derived from auditory coding. At the same time, their production is compared to that of 30 monolingual Montevideo Spanish (MS) speakers, who served as the control group, offering a first description of the production of <v> and <b> within this distinct Rioplatense Spanish variety. Riverense’s higher overall relative intensity, duration, and voicing values support auditory coding results, providing evidence of the expected phonological differences between both Uruguayan Spanish varieties. In particular, an exclusive presence of fricative/v/and less approximantization of/b/in RS speech exposed the influence of Portuguese in Rivera bilinguals and their divergence from MS. In addition, as predicted, the findings reveal a higher presence of Portuguese-like productions of [v] and [b] in older bilinguals when compared to younger generations. This illustrates a continuum from Portuguese-like forms to Spanish-like forms, which is confirmed by both acoustic and distributional analyses. Finally, evidence of the existence of innovative forms resulting from mixing Portuguese and Spanish phonological systems in RS are presented. This study’s findings contribute to sociolinguistics and bilingualism by exposing cross-linguistic influence in a border setting with rigorous analytical methods that offer reliable results and go beyond a basic analysis based on auditory identification.

O USO DOS RITMOS E DANÇAS NA EDUCAÇÃO ESCOLAR

This text is an excerpt from the Master’s Dissertation that addresses THE TRIPLE BORDER OF BRAZIL, PERU AND COLOMBIA: CULTURAL DIVERSITY AS A TEACHING TOOL IN A 3RD YEAR CLASS OF PIO VEIGA STATE SCHOOL IN THE MUNICIPALITY OF ATALAIA DO NORTE. Brazil is a country made up of great cultural diversity made up of different peoples, Africans, Europeans and indigenous people, each with their own customs, values ​​and beliefs, a mixture of different cultures. Schools located on borders, for example, are schools considered to have a higher rate of cultural diversity, as they are influenced by neighboring cities/countries. It is worth highlighting that Brazil has intense borders with several South American countries. Among these intense borders, in this study we will highlight the Triple Border: Brazil, Peru and Colombia. Although the school is a favorable environment for working with cultural diversity, what has been seen in the school environment is the great difficulty teachers have in integrating these diversities into their pedagogical practices. In this way, the school must assume the role of intermediary, for the study and knowledge of existing cultures within the school environment, through meaningful pedagogical practices. Thus, this study aimed to analyze how the cultural diversity of the triple border can contribute to the student training process.

CARACTERIZAÇÃO MINERALÓGICA DOS SEDIMENTOS DO IGARAPÉ DIABINHO (FORMAÇÃO SOLIMÕES) NO ESTADO DO ACRE – PROVENIÊNICA E IMPLICAÇÕS AMBIENTAIS

Igarapé Diabinho, situated in the central region of the state of Acre, is a tributary on the right bank of the Envira river, belonging to the Juruá river basin. Its U-shaped grooved channel is carved in sediments known as the Solimões Formation, of Late Miocene–Pleistocene age. The rocky exposures along Diabinho stream demonstrate a succession of massive silt-clay sediments, covered by other compact sandy silts cemented by carbonates. These sediments are partly overlain by alluvial (fluvial-lacustrine) sediments from the Quaternary, in the region where this stream dominates. For the study, samples collected in three profiles along a ravine on the right bank of Igarapé Diabinho were investigated, in an area used for picnics during the dry season, that is, with slight human disturbance. To assist in identifying the probable source areas of these sediments, and determine their weathering and transport conditions, granulometric analyzes were carried out, investigating the mineralogical composition of the sediments, their heavy minerals, and the mineralogy of the sediments’ clay fraction. The sediments are predominantly silts with little clay, being composed of quartz, feldspars (albite and microcline), clay minerals (smectite, illite, and kaolinite), muscovite, and chlorite. As a result, the sediments were deposited in mild paleoclimatic conditions under weak chemical weathering, indicated by the predominance of unstable minerals, such as amphiboles, feldspars, biotite, epidote, garnet, apatite, and titanite. The dominant presence of aluminosilicates (kyanite, andalusite, sillimanite, garnet, and micas) and epidote indicates that these sediments had as their primary source metamorphosed pelitic rocks. A second assemblage composed of tourmaline, zircon, apatite, titanite, and even ilmenite points to possible contributions from basic and intermediate igneous rocks that are currently observed in Serra do Divisor on the borders of Brazil and Peru. In conclusion, these findings contribute to implications in the paleoenvironmental context by providing insights into the probable source areas of the sediments, determining the weathering and transport conditions, and identifying the mineralogy of the sediments.

HIV in pregnant woman and children: Mother-to-child transmission of HIV in the Brazilian land border from 2010 to 2021.

The aim of the present study was to analyze the profile and trends of HIV mother-to-child transmission (MTCT) in the Brazilian land border strip (LBS). This was a quantitative, ecological, and cross-sectional study using secondary data available in the information systems of the Brazilian Ministry of Health. All cases reported in the Notifiable Diseases Information System between 2010 and 2021 were studied. Between 2010 and 2021, 275 children were born infected through MTCT, and 6076 pregnant women were living with HIV in the Brazilian LBS. HIV detection rates in pregnant women increased in all border arcs. The northern arc experienced the highest increase (19.6%), followed by the central arc (11.4%), and the southern arc (6.1%). Despite historically high detection rates, the southern arc exhibited the smallest increase. While MTCT rate decreased by 37.7% in the border area, the central arc showed no statistically significant reduction. In 2021, the average age of pregnant women was 26.2 years, 25.7% had up to 8 years of schooling, and 55.8% identified as non-white. The majority (92.8%) received antenatal care, and 59.7% were diagnosed with HIV before prenatal care. The use of prophylactic antiretroviral therapy during prenatal care occurred in 69.6% of pregnant women, and infant prophylaxis was provided within first 24 h to 43.6% of live births. The results indicate progress in reducing MTCT cases in Brazilian LBS. Disparities in HIV detection rates may be influenced by differences in testing uptake, despite mandatory testing for all babies. It is crucial to continue implementing strategies to reach these women and ensure equitable access to healthcare services for MTCT prevention.

The role of technological modernization in Brazil's border security: a study on the Integrated Border Monitoring System (SISFRON)

The central purpose of this study is to conduct a scientific analysis of the influence of technological innovations on crime mitigation and the enhancement of public security in the border zone of Brazil. This examination aims to understand how the adoption of cutting-edge technologies can contribute to reducing criminal activity and strengthening security in the country's border areas. This study is of great relevance as it seeks to assess the importance of implementing the Integrated Border Monitoring System (SISFRON) as a preventive and repressive measure against crimes in the border regions between Brazil and other Latin American countries. SISFRON is essential as it integrates the Armed Forces, government agencies, and federative states, playing a crucial role in National Defense. The methodology employed in this work is based on a deductive approach, involving qualitative bibliographic and documentary research. The analysis of institutional documents, mapping of key actors from institutions involved in border protection, and investigating their role in promoting public security and defending Brazilian borders are fundamental steps in this research. By concluding this study, it is expected to confirm that SISFRON emerges as a significant tool of the National Defense Policy. It not only focuses on internal security and strengthening territorial defense in border areas but also serves as a link for cooperation between neighboring countries, enabling the sharing of information and joint actions in combating various forms of transboundary illicit activities.

Molecular identification of Sarcocystis neurona in tissues of wild boars (Sus scrofa) in the border region between Brazil and Uruguay.

Sarcocystis neurona, owing to its clinical importance in domestic animals, is currently one of the most studied agents, presenting a wide range of intermediate hosts that have not yet been described, mainly in wild fauna. Thus, the aim of this study was to describe the detection and molecular detection of S. neurona by amplification of the 18S rRNA region in the tissues of wild boars killed by boar control program in border Brazil Uruguay. A total of 79 samples of DNA from wild boar tissues from the LADOPAR/UFSM sampling bank were used, with Nested-PCR reactions being performed for amplification of the 18S rRNA region and the expected final product of 290bp. Subsequently, the positive samples were subjected to restriction fragment length polymorphism (RFLP) technique with the restriction enzymes DdeI and HPAII. A second semi-Nested reaction was performed to obtain a larger sequence of nucleotides with amplification of the 18S region and the expected final product of 500bp for S. neurona and Nested amplification ITS1 with product final of 367 pb. In 32 samples, it was possible to detect S. neurona both by nested Nested-PCR reaction and RFLP, and the presence of the agent was confirmed by sequencing, corresponding to 40.51% of the total tissues evaluated. This is the first report of the occurrence of this species of Sarcocystis in wild boars, and further studies evaluating the role of these animals as intermediate hosts, and in the epidemiology of this protozoan are necessary, as well as verifying the risk factors for infection.

Detecção de anticorpos anti Leishmania spp. utilizando ensaio de imunoabsorção enzimática em gatos na fronteira Oeste do Brasil

ABSTRACT: Feline leishmaniosis is infrequent worldwide, and cats have been suggested as secondary reservoirs for the parasite. However, specific diagnostic techniques for feline samples are scarce. In this study, we standardized an in-house indirect enzyme-linked immunosorbent assay (ELISA) using crude Leishmaniainfantum antigen to detect antibodies in feline samples from an endemic canine visceral leishmaniosis (CVL) area in the western border of Brazil. The results were compared with those of an indirect immunofluorescence assay (IFA). We tested semi-domiciled felines residing in Uruguaiana and Barra do Quaraí, Rio Grande do Sul. Among the 41 samples, 25 (61%) were positive using ELISA and 24 (58%) were positive using IFA (1:40). Our findings demonstrated a high seropositivity of feline samples from the endemic CVL area in the western border of Brazil, and we proposed the use of an in-house ELISA with crude antigen for population screening. This is the first serological survey on felines in a region where CVL is well established.

Identification of Adulterants in Extra Virgin Olive Oil Using HS-SPME-GC-MS and Multivariate Data Analysis

Food fraud, such as the adulteration of extra virgin olive oil (EVOO), is found to cause substantial negative impacts on both the economy and the health of consumers. This work was aimed at evaluating 19 EVOO samples commercialized in Foz do Iguaçu, a frontier city located around the triple border of Brazil, Argentina, and Paraguay. To detect the presence of adulteration in EVOO samples, the present study employed gas chromatography coupled to flame ionization detector (GC-FID) and headspace solid phase microextraction with gas chromatography coupled to mass spectrometry (HS-SPME-GC-MS) in order to evaluate fatty acids composition and volatile organic compounds (VOCs), respectively. The quantitative results obtained from the analysis of fatty acids composition showed that 32% of the EVOO samples were adulterated, presumably with soy oil, due to the high levels of linoleic, linolenic, and myristic acids present in them. Principal component analysis (PCA) conducted using the complete chromatographic aroma profiles obtained from the VOCs helped distinguish authentic EVOO samples from adulterated ones and the country of origin of the samples. The following aromatic compounds were first described, as possible adulterant markers: 3,3-dimethylheptanoic acid, propyl pentanoate, methyl cyclohexanecarboxylate, ethyl cyclohexanecarboxylate, 2-phenylethyl acetate, 6,10,14-trimethylpentadecan-2-one, and 1,2-dimethoxy-4-methylbenzene.

Experience and expectations of doulas in a Brazilian border region

RESUMO O estudo buscou compreender a vivência e as expectativas das doulas que atuam ou atuaram em dois municípios de região de fronteira: Foz do Iguaçu e Cascavel, Paraná, Brasil. Tratou-se de uma pesquisa qualitativa pautada no referencial da Fenomenologia Social. A coleta das informações deu-se por entrevistas com roteiro semiestruturado em língua portuguesa. As entrevistas foram feitas on-line. Os resultados foram classificados em seis categorias: motivação para tornar-se doula, conhecimento sobre o papel da doula, o cotidiano das doulas, abarcando as subcategorias de experiências exitosas e desafios da atividade na região de fronteira, a invisibilidade da doulagem, as expectativas enquanto doulas frente ao cenário obstétrico e o esperado da sua atuação profissional. O estudo permitiu compreender a vivência das doulas e o conhecimento do papel da sua função no Sistema Único de Saúde (SUS), no setor privado e em partos domiciliares, evidenciando a importância da atuação multiprofissional. Foram ponderadas resistências no cenário obstétrico por desconhecimento dos profissionais da assistência sobre o papel da doula. Em relação à atuação na região de fronteira, as doulas relataram o acompanhamento de mulheres paraguaias no Brasil e, com menos frequência, no Paraguai. As barreiras culturais e linguísticas foram destacadas como obstáculos para o exercício profissional em outro país.

Irgafos 168 and Irganox 1076 as new cocaine cutting agents: A COVID-19 pandemic impact on cocaine profiling and trafficking in Brazil

BackgroundsRestrictions in movement and closure of borders imposed by the Sars-Cov- 2 worldwide pandemic have affected the global illicit drug market, including cocaine trafficking. In this scenario, comparing cutting agents added to the cocaine and the drug purity are valuable strategies to understand how the drug trade has been impacted by the pandemic. MethodsIn this work, 204 cocaine salt materials seized in the Brazilian Federal District, before (2019) and during COVID-19 pandemics (2020) were analyzed by two analytical techniques: gas chromatography-mass spectrometry (GC–MS) and Fourier-transform infrared spectroscopy (FTIR). Statistical analyses, including Principal Component Analysis (PCA), were applied to evaluate the COVID-19 pandemic impact in the local market. Bibliometric analysis was performed as a forensic intelligence tool. Results: From 2019–2020, cocaine average purity decreased 26 % while the frequency of cutting agents, as caffeine and anesthetics (lidocaine, tetracaine) increased. The high percentage of unknown were increased. Different cocaine profiling seized in 2020 showed new cutting agents, such as Irganox 1076, and Irgafos 168, indicating a trend on new adulterants/diluents introduced in the local market to mitigate the local drug shortage. Also in 2020, there was an increase in the local cocaine seizures, despite of the cocaine drug purity decreased by 26 % compared to 2019. Conclusions: Taken together, these data showed that the covid-19 pandemics has impacted cocaine trafficking in the Brazilian Federal District, an increase in cocaine seizures, which may indicate greater demand for the drug and, specially, changes in the cocaine purity and cutting agents profiling showing how traffickers tried to minimize difficulties in crossing the Brazilian border during COVID-19 restrictions. The information is relevant since Brazil is one of the major departure points for traded cocaine to the world. Bibliometric analysis showed that Irgafos 168 and Irganox 1076 were consistently identified as cocaine cutting agents for the first time.

The last and endangered maned wolves (Chrysocyon brachyurus) from southern Brazil and Uruguay: new records and spatial distribution modeling

ABSTRACTThe biggest canid in the neotropics, the maned wolf (Chrysocyon brachyurus), is endangered in many parts of its distribution. Only eight records have been reported for Uruguay and the southern border of Brazil over the last 30 years. After a multi-year effort, we present nine new records for this area and characterize Uruguay and southern Brazil’s habitat suitability. Our records confirm the current presence of the species in Uruguay, the Brazilian Pampa, and the Atlantic highlands of southern Brazil, although no local population could be identified. Individuals appear to move in an erratic pattern, possibly when searching for other members of the species. Only three regions presented multiple records (all in the Atlantic highlands), indicating the possible existence of local populations. Although most of southern Brazil and Uruguay are highly suitable for the species, none of the 21 surveyed areas (with 50,816 camera trap nights) within putative distribution areas have confirmed the species occurrence, as all records reported here came from opportunistic encounters. In light of this, we believe that very few individuals still occur in the southern limit of the maned wolf distribution, and thus, the species can certainly be classified as critically endangered in the Brazilian Pampa/Uruguayan Savanna.

Gymnotiform electric fishes of the Tres Fronteras region of the western Amazon

Gymnotiform electric knifefishes are an important yet undersampled component of the Neotropical aquatic biota. We report on the gymnotiform fauna of the Tres Fronteras region located at the triple border of Brazil, Colombia, and Peru in the biodiverse western Amazon. The presence of at least 33 species of gymnotiforms in the Tres Fronteras region is validated from recent sampling efforts and the review of previously collected materials. A key is provided for the identification of the species that have been collected from the region. We comment on the diversity of habitat utilization and intraspecific colour variation of some species.

Blue Morpho

SummaryIn what why can fiction help us craft and share ethnographic work when life is in flux and the people with whom we live with also have a hard time making “rational” sense of what is happening to them? This ethnographic fiction about love, quandary, and rebirth is set against the deep crisis in Venezuela—money has become worthless, families are shattered, mutual trust has evaporated, jobs and food are scarce, and everyone is trying to make a living. The creative endeavour arose during online exchanges with research participants and friends, the re‐reading of fieldnotes, and the surfacing of poignant memories while growing up with a Venezuelan family twenty years ago. The plot around the butterfly coalesced with these personal memories and an emerging understanding of natural abundance, human, fragility, and metamorphosis in how Venezuelans make sense of loss and inequality. The storyline follows the life of Marianela, an upper middle‐class woman born and bred in Caracas, who ends up in a goldmine in the south of Venezuela with her three‐year daughter Alba. One day, at the Brazilian border, a blue butterfly warns her that her beloved caretaker passed away. To overcome this loss, Marianela intents to finally break away from subjugation.

The core and the links: indigenous strategies and social interaction on the southern border of Brazil (1814-1822)

As temáticas deste artigo são a capacidade dos guarani-missioneiros de assegurar sua reprodução sociocultural e as estratégias empregadas nisto e para entabular interações com a sociedade colonial no centro-oeste do Rio Grande do Sul de 1814 a 1822 em meio a uma conjuntura de guerra generalizada e decadência do sistema sociopolítico e econômico missioneiro. Por meio da análise de registros de batismos de São Borja e Santa Maria, examinamos os padrões de compadrio, matrimônio e a formação de aglomerados humanos. Percebemos que a sociedade em geral era fragmentada e descontínua. Em relação aos indígenas, concluiu-se que se organizavam em agregados através de relações familiares que se desdobravam em ao menos duas formas identitárias: de povo em São Borja e de comunidade em Santa Maria. Tais aglomerados de índios eram organizados nuclearmente pelas mulheres e externamente por homens com prestígio no interior da coletividade e que agiam como elos com os grupos não-indígenas.

COVID-19 and Vaccination: Knowledge, Attitudes and Practices of People Working on Illegal Gold Mining Sites in French Guiana.

French Guiana is a French territory bordering Brazil and Suriname where the COVID-19 pandemic has severely strained the French Guianese health system. The people working on illegal gold mining sites in French Guiana, also known as garimpeiros, are mainly of Brazilian origin. Their health conditions are precarious, they live under the radar of the surveillance system and therefore, assessment of their health is quite challenging.. The objective of this study was to describe their knowledge, attitudes and practices regarding COVID-19 and vaccination against this infection. We conducted an international multicenter cross-sectional survey between 1 March 2022 and 30 April 2022 in French Guiana and Suriname, using a structured questionnaire. Eighty persons were included, 95.0% of whom were Brazilian. Most had good general knowledge of COVID-19. Antibiotic prophylaxis had been practiced by 10.0% of participants. Forty-three people thought they had been infected with COVID-19 (53.8%). Self-medication was frequent, often with antibiotics (32.6%, mostlychloroquine, ivermectin or azithromycin) and most had not consulted a physician for symptoms of COVID-19. A majority (62.5%) had received at least one dose of vaccine. Those who were ever tested for COVID-19 were the most likely to be vaccinated (PR = 1.98, p = 0.009). Garimpeiros have a good level of knowledge about COVID-19 but the high consumption of antibiotics raises concerns about the selection of resistant bacteria. The vaccination rate was higher than that of the Guianese population. The most vaccinated individuals were those who had already taken a COVID test suggesting that these individuals had more exposure to the disease, were more health conscious, or had easier access to health centers.

Resposta brasileira à crise humanitária venezuelana: A Operação Acolhida como uma política de esperança

Abstract This article discusses how Operation Acolhida, within the context of the Venezuela Situation, functions as a customized politics of hope where the Venezuelans refugees and migrants crossing the Brazilian border’s need for hope of is instrumentalized in a strategy to define how/what to hope for. The methodology is divided in the following subsections: the first section brings the discussion on the metaphysics of presence and its logocentric and teleologic perspectives; section two discusses how theories and understanding of hope have been evolving from the Ancient Greek thinkers till the present day and presents the politics of hope as a tool to understand the Operation Acolhida. The last two sections draw its conclusions by analysing how Operation Acolhida activates a customized strategy.

Cross-sectional spatial and epidemiological analysis of canine visceral leishmaniasis cases in the triple border region, Brazil, Argentina and Paraguay, between 2015 and 2020

Visceral Leishmaniasis is one of the most important vector-borne zoonoses in the world. In 2013, the first autochthonous canine case of the disease in the state of Paraná, southern region of Brazil, was reported in Foz do Iguaçu, on the triple border between Brazil, Argentina and Paraguay. In 2015, the first human case was related. Once the endemic was confirmed, the Zoonoses Control Center (ZCC), an agency of the Municipal Health Department, started actions to implement the Human Visceral Leishmaniasis (HVL) Surveillance and Control Program (VLSCP), of the Ministry of Health. Between 2015 and 2020, 12,205 dog samples were analyzed for the diagnosis of the disease. A prevalence of 37.94% (4,630 samples) was found: 2016 had the highest prevalence, with 46.25%, and the year with the lowest prevalence was 2020, with 25.98%. Possible risk factors for dogs were analyzed, and the results obtained were: whether the request for the exam was performed by the ZCC was a significant protective factor, with a lower prevalence (37.5%) than dogs coming from private clinics (OR = 0.89, p-value = 0.016). Males were significantly more infected than females, with 41.1% and 35.7% positivity, respectively (OR = 1.24, p < 0.0001). Companion dogs and mixed breed dogs were significantly less affected than the other groups tested (OR = 0.44, p < 0.001; OR = 0.79, p = 0.012, respectively). The dogs' dark coat color was a significant risk factor with respect to the other color categories. Short and medium coat sizes were significantly considered risk factors, with 41.3% and 31.3% positivity. Long-haired dogs had only 22.7% positivity. In univariate analyses, giant, large and medium dogs were significantly more affected than small dogs. Dogs up to four years of age were significantly less affected than those in other age groups. There was a coincidence of human and canine cases in the spatial distribution. However, according to the literature, a higher incidence would be expected in humans, due to the high prevalence found in dogs. Therefore, further studies should be carried out to understand the dynamics of the disease in this region.

Wavelet Spatio-Temporal Change Detection on Multitemporal SAR Images

We introduce the WECS (Wavelet Energies Correlation Screening), an unsupervised method to detect spatio-temporal changes on multitemporal SAR images. The procedure is based on wavelet approximation for the multitemporal images, wavelet energy apportionment, and ultra-high dimensional correlation screening for the wavelet coefficients. We show WECS's performance on simulated multitemporal image data. We also evaluate the proposed method on a time series of 85 Sentinel-1 images of a forest region at the border of Brazil and French Guiana. Comparisons with well-known change detection methods found in the literature highlight the proposal's superiority in terms of change detection accuracy. Additionally, the introduced method has simple architecture and low computational cost.

Diagnosis of Toxoplasma gondii infection in pregnant women from the Brazilian border, Foz do Iguaçu

Resumo Introdução: O Toxoplasma gondii, parasito intracelular obrigatório, é o agente etiológico da toxoplasmose, a qual acomete cerca de um terço da população mundial. Objetivo: Analisar a frequência da infecção por Toxoplasma gondii em gestantes em Foz do Iguaçu e verificar possíveis fatores de associação a infecção. Método: Foi realizado um estudo transversal retrospectivo (dados de 2017) que avaliou exames sorológicos, pesquisa de anticorpos IgG e IgM para T. gondii durante a gestação e possíveis fatores de associação a infecção, a partir das fichas de pré-natal das gestantes em unidades de saúde, Foz do Iguaçu/PR. O teste do χ2 para tendência foi utilizado para análise dos dados e, o odds ratio (OR) para estimar a chance de associação entre as variáveis. Resultados: Das 1.000 fichas de pré-natal analisadas, 78,1% apresentaram registro de sorologia para T. gondii, das quais, 34,0% eram imunes ao T. gondii, 3,9% apresentaram anticorpos IgG e IgM e 66,0% eram suscetíveis. A maioria das gestantes iniciaram o pré-natal no primeiro trimestre 467 (60,0%). Houve predominância de gestantes com mais de uma gestação 200 (44,0% — p=0,00001), brasileiras 259 (35,1% — p=0,0112), idade &gt;41 anos 7 (63,6%), ensino médio completo 125 (37,8% — p&lt;0,05) e de cor da pele branca 140 (38,5% — p=0,0164). Conclusões: Os fatores associados a frequência da infecção nas gestantes devem ser considerados durante o pré-natal para a prevenção da infecção.