scholarly journals SARS-CoV-2 in wastewater from Mexico City used for irrigation in the Mezquital Valley: quantification and modeling of geographic dispersion

Author(s):  
Yaxk’in Coronado ◽  
Roberto Navarro ◽  
Carlos Mosqueda ◽  
Valeria Valenzuela ◽  
Juan Pablo Pérez ◽  
...  
2021 ◽  
Author(s):  
Yaxk'in Coronado ◽  
Roberto Navarro ◽  
Carlos Mosqueda ◽  
Valeria Valenzuela ◽  
Juan Pablo Perez ◽  
...  

Quantification of SARS-CoV-2 in urban wastewaters has emerged as a cheap, efficient strategy to follow trends of active COVID-19 cases in populations. Moreover, mathematical models have been developed that allow prediction of active cases following the temporal patterns of viral loads in wastewaters. In Mexico, no systematic efforts have been reported in the use of this strategies. In this work, we quantified SARS-CoV-2 in rivers and irrigation canals in the Mezquital Valley, Hidalgo, an agricultural region where wastewater from Mexico City is distributed and used for irrigation. Using quantitative RT-PCR, we detected the virus in 6 out of 8 water samples from rivers, and 5 out of 8 water samples from irrigation canals. Notably, samples showed a general consistent trend of having the highest viral loads in the sites closer to Mexico City, indicating that this is the main source that contributes to detection. Using the data for SARS-CoV-2 concentration in the river samples, we generated a simplified transport model that describes the spatial patterns of dispersion of virus in the river. We suggest that this model can be extrapolated to other wastewater systems that require knowledge of spatial patterns of viral dispersion at a geographic scale. Our work highlights the need for improved practices and policies related to the use of wastewater for irrigation in Mexico and other countries.


2020 ◽  
Vol 17 (1) ◽  
pp. 37-46 ◽  
Author(s):  
Antonio Alejo

There is a pressing need to extend our thinking about diplomacy beyond state-centric perspectives, as in the name of sovereignty and national interests, people on move are confronting virtual, symbolic and/or material walls and frames of policies inhibiting their free movement. My point of departure is to explore migrant activism and global politics through the transformation of diplomacy in a globalised world. Developing an interdisciplinary dialogue between new diplomacy and sociology, I evidence the emergence of global sociopolitical formations created through civic bi-nationality organisations. Focusing on the agent in interaction with structures, I present a theoretical framework and strategy for analysing the practices of migrant diplomacies as an expression of contemporary politics. A case study from North America regarding returned families in Mexico City provides evidence of how these alternative diplomacies are operating.


Somatechnics ◽  
2016 ◽  
Vol 6 (2) ◽  
pp. 198-215
Author(s):  
Robert McRuer

Theorists of neoliberalism have placed dispossession and displacement at the centre of their analyses of the workings of contemporary global capitalism. Disability, however, has not figured centrally into these analyses. This essay attends to what might be comprehended as the crip echoes generated by dispossession, displacement, and a global austerity politics. Centring on British-Mexican relations during a moment of austerity in the UK and gentrification in Mexico City, the essay identifies both the voices of disability that are recognized by and made useful for neoliberalism as well as those shut down or displaced by this dominant economic and cultural system. The spatial politics of austerity in the UK have generated a range of punishing, anti-disabled policies such as the so-called ‘Bedroom Tax.’ The essay critiques such policies (and spatial politics) by particularly focusing on two events from 2013: a British embassy good will event exporting British access to Mexico City and an installation of photographs by Livia Radwanski. Radwanski's photos of the redevelopment of a Mexico City neighbourhood (and the displacement of poor people living in the neighbourhood) are examined in order to attend to the ways in which disability might productively haunt an age of austerity, dispossession, and displacement.


2019 ◽  
Vol 35 (3) ◽  
pp. 327-351
Author(s):  
Omar Velasco Herrera

Durante la primera mitad del siglo xix, las necesidades presupuestales del erario mexicano obligaron al gobierno a recurrir al endeudamiento y al arrendamiento de algunas de las casas de moneda más importantes del país. Este artículo examina las condiciones políticas y económicas que hicieron posible el relevo del capital británico por el estadounidense—en estricto sentido, californiano—como arrendatario de la Casa de Moneda de México en 1857. Asimismo, explora el desarrollo empresarial de Juan Temple para explicar la coyuntura política que hizo posible su llegada, y la de sus descendientes, a la administración de la ceca de la capital mexicana. During the first half of the nineteenth century, the budgetary needs of the Mexican treasury forced the government to resort to borrowing and leasing some of the most important mints in the country. This article examines the political and economic conditions that allowed for the replacement of British capital by United States capital—specifically, Californian—as the lessee of the Mexican National Mint in 1857. It also explores the development of Juan Temple’s entrepreneurship to explain the political circumstances that facilitated his admission, and that of his descendants, into the administration of the National Mint in Mexico City.


PCI Journal ◽  
1998 ◽  
Vol 43 (2) ◽  
pp. 14-20
Author(s):  
Bernard Kohn ◽  
Eduardo Terrazas ◽  
Mario Fastag
Keyword(s):  

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