First record of the genus Schizothorax in rivers of the Central Himalayas in China.

A total of 40 specimens of the genus Schizothorax (Cyprinidae: Schizothoracinae), including 10 matured males, 19 matured females and 11 juveniles, were captured from the Kirong Tsangpo River in China, which is located in the southern slope of the Central Himalayas. These specimens are identified as Schizothorax richardsonii (Grey, 1832) based on morphological characters and molecular analyses using mitochondrial Cyt b gene sequences. The Kirong population of S. richardsonii is relatively isolated from other populations in the Himalayas and has low genetic diversity. This is the first record of the genus Schizothorax fish in rivers of the Central Himalayas in China. As S. richardsonii is a vulnerable species on the IUCN Red List, a protection plan should be conducted to reduce the impact of anthropogenic disturbance by monitoring the natural population dynamics and assessing the ecological determinants of its distribution.

Trans-border Mobility and Security in the Sahel: Exploring the Dynamics of Forced Migration and Population Displacements in Burkina Faso and Mali.

Burkina Faso and Mali have been grappling with multiple security threats including jihadist challenge, military coup d'état, violent extremism, and poor governance. These complex security problems have escalated into national conflicts, state failure, internal displacements, and forced migration. This paper examined the changing patterns of the drivers and enablers of these security threats and how these forces feed into the protracted challenges of forced migration and population displacements. Using qualitative methods and documentary evidence, the paper found that poor governance, lack of state-building measures, and socio-economic exclusion of local populations contributed to the worsening crises of forced migration and population displacements in Burkina-Faso and Mali. The paper emphasised the human security perspectives hinged on good governance principles through effective leadership in Burkina-Faso and Mali particularly in the areas of industrialization, employment creation, reduction of poverty, and provision of adequate security for the people.

Detecting pollutant sources and pathways: High-frequency automated online monitoring in a small rural French/German transborder catchment.

Great temporal and spatial variability of inputs make comprehensive monitoring in small and middle sized rivers difficult. In this study, relevant inputs in a small river were recorded with suitable online monitoring equipment coupled in mobile water quality monitoring stations, the study area being a transborder catchment with French and German (Saarland federal state) subcatchments. In addition to a pronounced spatial variability necessitating a denser net of measuring points this catchment has also to be assessed in the light of different national regulations. To identify individual pollution sources and weigh their relative importance, relevant parameters were recorded over a representative monitoring period of several months: phosphorus (P) as total phosphorus (TP) and total reactive P phosphorus (TRP), nitrate (NO3-N), ammonium (NH4-N), total organic carbon (TOC), temperature, oxygen (O2), pH, turbidity, and electrical conductivity (EC). The recorded data were subjected to adapted interpretation together with other catchment-related factors. In order to retrieve maximum information from the online data sets the relationships among certain parameter pairs were also analysed for both storm events and low flow periods. Comparison of loads at the different monitoring sites could reliably verify the majority of nutrient inputs originating in the French subcatchment. Additional sampling of output channels from sewage treatment works (STWs) in the Saarland subcatchment revealed that inputs from several decentralised STWs do not result in significant loads, as opposed to inputs from one STW in France. Our holistic approach provides a basis for adopting cost-effective measures to reduce loads in small river catchments as well as cross-border harmonisation of environmental policies.

Illegal gold miners in French Guiana: a neglected population with poor health.

BACKGROUND: In French Guiana, a French overseas territory in South America, 6 to 10 thousands undocumented persons work illegally in gold mining sites in the Amazonian forest. Precarious life conditions lead to poor health but few data exist on the health status of illegal gold miners in French Guiana. The objective of this article was to describe the sociodemographic and health status of this vulnerable population. METHOD: A prospective cross-sectional survey was conducted in 2015 on gold mine supply sites at the border between French Guiana and Suriname. Health status was assessed through medical examination, past medical history, haemoglobin concentration, and HIV and malaria testing. A questionnaire was used to collect data about the migration itinerary and life conditions on mining sites. RESULTS: Among the 421 adults included in the study, 93.8% (395/421) were Brazilian, mainly from Maranhão (55.7%, 220/395), the poorest Brazilian state. The sex ratio was 2.4. Overall, 48% of persons never went to school or beyond the primary level. The median time spent in gold mining was quite long (10 years), with a high turn-over. One third of the surveyed population (37.1%, 156/421) had high blood pressure, and only two had a medical follow-up. Most persons had experienced malaria (89.3%, 376/421). They declared frequent arboviroses and digestive disorders. Active leishmaniasis was observed in 8.3% of gold miners. Among women, 28.5% were anemic. Concerning HIV, 36.6% (154/421) of persons, mainly men, never got tested before and 6 were tested positive, which represented an HIV prevalence of 1.43% (95%CI =0.29-2.5). CONCLUSION: These findings support the hypothesis that mining in remote areas is linked to several specific illnesses. Theoretically, gold miners would be presumed to start their economical migration to French Guiana as a healthy group. However, their strenuous working and living conditions there lead to poor health caused by infectious and non infectious diseases. This description of their health status is precious for health policy planners in French Guiana given the importance of controlling communicable disease, and the severity and range of specific illnesses acquired by this neglected population. TRIAL REGISTRATION: Clinical trial registration PRS N° NCT02903706 . Retrospectively registered 09/13/2016.

Isonymic Relations in the Bolivia-Argentina Border Region.

When migrating, people carry their cultural and genetic history, changing both the transmitting and the receiving populations. This phenomenon changes the structure of the population of a country. The question is how to analyze the impact on the border region. A demographic and geopolitical analysis of borders requires an interdisciplinary approach. An isonymic analysis can be a useful tool. Surnames are part of cultural history, sociocultural features transmitted from ancestors to their descendants through a vertical mechanism similar to that of genetic inheritance. The analysis of surname distribution can give quantitative information about the genetic structure of populations. The isonymic relations between border communities in southern Bolivia and northern Argentina were analyzed from electoral registers for 89 sections included in four major administrative divisions, two from each country, that include the international frontier. The Euclidean and geographic distance matrices where estimated for all possible pairwise comparisons between sections. The average isonymic distance was lower between Argentine than between Bolivian populations. Argentine sections formed three clusters, of which only one included a Bolivian section. The remaining clusters were exclusively formed by sections from Bolivia. The isonymic distance was greater along the border. Regardless of the intense human mobility in the past as in the present, and the presence of three major transborder conurbations, the Bolivian-Argentine international boundary functions as a geographical and administrative barrier that differentially affects the distribution and frequency of surnames. The observed pattern could possibly be a continuity of pre-Columbian regional organization.

The Effect of Transborder Mobility on COVID-19 Incidences in Belgium.

Belgium is a geographically small country bordered by The Netherlands, France, Germany, and Luxembourg, with intense transborder mobility, defined as mobility in the border regions with neighboring countries. It is therefore of interest to examine how the 14-day COVID-19 confirmed case incidence in the border regions is influenced by that of the adjacent regions in the neighboring countries and thus, whether and how it differs from that in the adjacent non-border regions within Belgium. To this end, the 14-day COVID-19 confirmed case incidence is studied at the level of Belgian provinces, well-defined border areas within Belgium, and adjacent regions in the neighboring countries. Auxiliary information encompasses work-related border traffic, travel rates, the proportion of people with a different nationality, the stringency index of the non-pharmaceutical interventions, and the degree of urbanization at the level of the municipality. Especially in transnational urbanized areas such as between the Belgian and Dutch provinces of Limburg and between the Belgian province of Antwerp and the Dutch province of North Brabant, the impact on incidence is visible, at least at some points in time, especially when the national incidences differ between neighboring countries. In contrast, the intra-Belgian language border regions show very little transborder impact on the incidence curves, except around the Brussels capital region, leading to various periods where the incidences are very different in the Dutch-speaking north and the French-speaking south of Belgium. Our findings suggest that while travel restrictions may be needed at some points during a pandemic, a more fine-grained approach than merely closing national borders may be considered. At the same time, in border regions with considerable transborder mobility, it is recommended to coordinate the non-pharmaceutical interventions between the authorities of the various countries overlapping with the border region. While this seems logical, there are clear counterexamples, e.g., where non-essential shops, restaurants, and bars are closed in one country but not in the neighboring country.

The Development of a Collaborative Binational Strategy to Support the San Diego-Tijuana Transborder Community During the COVID-19 Pandemic.

The COVID-19 pandemic illustrates the need for and importance of cross-border public health collaboration. San Diego, California and Tijuana, Baja California are an interconnected region with one of the busiest international borders in the world and hundreds of thousands bi-directional crossings each day. As the sister cities witnessed the rising case numbers early in the pandemic, it became essential and urgent to implement a formal structure to facilitate cross-border COVID-19 communication, coordination, and collaboration. The present article describes how the development of a Collaborative Binational Strategy led to coordinated outreach and initiatives that addressed access and equity in the transborder region. Through examples, the article illustrates how regional leaders in San Diego and Tijuana harnessed existing transborder partnerships to collaboratively build infrastructure and communication pathways to exchange data, guidance, troubleshoot shared challenges, build capacity, and establish cross-border testing and vaccine opportunities. The challenges, lessons learned, and best practices may inform other multi-level, interdisciplinary, and cross-border jurisdictions on how to support a transborder community during a pandemic or other health emergency.

Metagenomic Analysis of Microbial Contamination in the U.S. Portion of the Tijuana River Watershed.

The Tijuana River watershed is binational, flowing from Tijuana, Mexico into San Diego and Imperial Beach, USA. Aging sewage and stormwater infrastructure in Tijuana has not kept pace with population growth, causing overflows into this watershed during major rainfall or equipment failures. The public health consequences of this impaired watershed on the surrounding communities remain unknown. Here, we performed untargeted metagenomic sequencing to better characterize the sewage contamination in the Tijuana River, identifying potential pathogens and molecular indicators of antibiotic resistance in surface waters. In 2019-2020, water samples were collected within 48 h of major rainfall events at five transborder flow sites and at the mouth of the river in the US portion of the Tijuana River and estuary. After filtration, DNA was extracted and sequenced, and sequences were run through the Kaiju taxonomic classification program. A pathogen profile of the most abundant disease-causing microbes and viruses present in each of the samples was constructed, and specific markers of fecal contamination were identified and linked to each site. Results from diversity analysis between the sites showed clear distinction as well as similarities between sites and dates, and antibiotic-resistant genes were found at each site. This serves as a baseline characterization of microbial exposures to these local communities.

Factors Influencing the Transborder Transmission of Brucellosis in Cattle Between Côte d'Ivoire and Mali: Evidence From Literature and Current Key Stakeholders.

Brucellosis is one of the main zoonoses affecting ruminants. Cattle and small ruminants are involved in transhumance and trade between Côte d'Ivoire and Mali. The endemic nature of the disease in both countries, connected through transhumance, poses unique challenges and requires more information to facilitate disease surveillance and the development of integrated control strategies. This study aimed to assess the main factors influencing the historical and current transborder transmission of brucellosis between Côte d'Ivoire and Mali. A literature review was conducted and data collection was performed through a participatory, transdisciplinary process by holding focus group discussions and interviews with key stakeholders. Cattle breeders, herdsmen, professionals of animal and human health, border control agents and experts took part. The data was analyzed to generate essential new knowledge for transborder brucellosis transmission factors and control strategies. From the literature, the seroprevalence of brucellosis in both countries varied from 11% (1987) to 20% (2013) and 15% (1972-1973) to 5% (2012-2014) in Mali and Côte d'Ivoire, respectively. The reduction of seroprevalence in Côte d'Ivoire was the result of the annual vaccination campaigns which lowered it from 28% (1978) to 14% (1984) after an increase due to livestock policy implemented in 1976. The meta-analysis and interviews jointly showed that the cross-border mobility was associated with the livestock development policy in Côte d'Ivoire as well as the ECOWAS act on the free movement of people and goods. This act supported the seasonal transhumance of livestock for access to pasture land in southern humid zones in Côte d'Ivoire. The seasonal mobility for grazing and trade was the main risk factor for the spread of brucellosis between pastoral zones of both countries. The existing legal health framework and border control mechanism do not achieve transborder surveillance to control brucellosis. Existing sanitary regulations should be adapted at regional scale to integrate a joint surveillance of high priority zoonotic diseases like brucellosis at border controls.

Ecosystem service flows from a migratory species: Spatial subsidies of the northern pintail.

Migratory species provide important benefits to society, but their cross-border conservation poses serious challenges. By quantifying the economic value of ecosystem services (ESs) provided across a species' range and ecological data on a species' habitat dependence, we estimate spatial subsidies-how different regions support ESs provided by a species across its range. We illustrate this method for migratory northern pintail ducks in North America. Pintails support over $101 million USD annually in recreational hunting and viewing and subsistence hunting in the U.S. and Canada. Pintail breeding regions provide nearly $30 million in subsidies to wintering regions, with the "Prairie Pothole" region supplying over $24 million in annual benefits to other regions. This information can be used to inform conservation funding allocation among migratory regions and nations on which the pintail depends. We thus illustrate a transferrable method to quantify migratory species-derived ESs and provide information to aid in their transboundary conservation.

DYNAMICS IN MALARIA TRANSMISSION IN THE CROSS-BORDER AREAS OF MOZAMBIQUE, SOUTH AFRICA AND ESWATINI (MOSASWA), MARCH 2017 TO MARCH 2019 / DINÂMICA NA TRANSMISSÃO DA MALÁRIA NAS ZONAS TRANSFRONTEIRIÇAS DE MOÇAMBIQUE, ÁFRICA DO SUL E ESWATINI (MOSASWA), MARÇO DE 2017 A MARÇO DE 2019

Introduction: malaria is considered a major public health issue for humans worldwide, and it is estimated that more than 1/3 of the population is in circumstantial equality of acquiring it. Sharing borders between several countries with different malaria prevalence and strategies further delays elimination goals. Aim: to analyze malaria transmission dynamics in the crossborder areas of Mozambique, South Africa and ESwatini from March 2017 to March 2019. Methodology: a malaria database (secondary source) was queried, from which ratio comparison tests were performed and then logistic regression model estimation was done. The sample consisted of 250563 migrants and residents in MOSASWA cross-border areas tested for malaria between March 2017 to March 2019, whose in-depth analyses focused on all positive cases (5253), diagnosed in the same period. Descriptive statistics were used to describe the main indicators, in addition to testing hypotheses of association at 5% significance level. Data were analyzed using SPSS 22.0. Results: 250563 people were tested, out of which, 93035 (37.13%) were migrant populations and 157528 (62.87%) were residents of the surrounding areas. Regarding gender and occupation, 50.1% were male and 76% had informal occupation. The positivity of those tested was 2.1% (5253), out of which, 33.3% (1751) were mobile and migrant populations. 39.18% (686) and 28.44% (498) of the positive travelers were using the Macuacua and Ressano Garcia borders on their way to South Africa respectively. 45.9% of the total cases were asymptomatic carriers. 66.7% of the positives cases were surrounding populations, out of which 20.5% and 20.6% crossed the borders three to four times a week. The predictive power of having malaria increased 5.090 and 3.540 times more if the migrant had been tested in Mozambique and if he/she was a resident in the vicinity of the borders, crossing into the borders of the same country respectively. Conclusions: A large number of the moving cases were diagnosed in Mozambique on their way to South Africa through Macuacua border.

Introdução: A malária é considerada uma das principais problemáticas de saúde pública para o homem no mundo, e estima-se que mais de 1/3 da população está em igualdade circunstancial de adquiri-la. A partilha de fronteiras entre vários países com prevalências e estratégias de malária diferentes atrasa ainda mais as metas de eliminação. Objectivo: Analisar a dinâmica de transmissão de malária nas zonas transfronteiriças de Moçambique, África do Sul e ESwatini (MOSASWA) de Março de 2017 a Março de 2019. Metodologia: Foi consultada uma base de dados (fonte secundária) de malária, da qual foram feitos testes de comparações de proporções de casos de malária e em seguida fez-se a estimação do modelo de regressão logística para verificar as chances de casos positivos diagnosticados em movimento afectar os países vizinhos. A amostra foi composta por 250563 pessoas testadas nos postos de vigilância (migrantes e residentes nas zonas transfronteiriças) de MOSASWA. As análises aprofundadas incidiram sobre todos casos positivos (5253), diagnosticados em igual período. Foi usada estatística descritiva para descrever os principais indicadores, para além de se testar hipóteses de associação a positividade e a proveniência dos casos, a nível de significância de 5%. Resultados: Foram considerados 250563 indivíduos, que constavam na base de dados, das quais, 93035 (37.13%) eram populações migrantes e 157528 (62,87%) residentes nas zonas circunvizinhas às fronteiras. Em relação ao género e ocupação, 50,1% eram do sexo masculino e 76% tinham ocupação informal. A positividade aos testados foi de 2.1% (5253). Dos positivos 33,3% (1751) eram populações móveis e migrantes. 39,18% (686) e 28,44% (498) dos viajantes usavam as fronteiras de Macuacua e Ressano Garcia a caminho de África de Sul respectivamente. 45,9% do total dos casos eram portadores assintomáticos. Do total dos positivos, 66,7% foram populações circunvizinhos, dos quais, 20.5% e 20,6% atravessavam às fronteiras três a quatro vezes por semana. O poder preditivo de ter malária aumentou 5,090 e 3,540 vezes mais se o migrante tivesse sido testado em Moçambique e se fosse residente nas redondezas das fronteiras, atravessando às fronteiras do mesmo país respectivamente. Conclusões: Grande parte dos casos em movimento foram diagnosticados em Moçambique, a caminho de África de Sul pela fronteira de Macuacua.