Correction: Is social cohesion produced by weak ties or by multiplex ties? Rival hypotheses regarding leader networks in urban community settings.

[This corrects the article DOI: 10.1371/journal.pone.

[A structural method to assess the course of the SARS-CoV-2 pandemic in school environmentsMétodo estructural para examinar el curso de la pandemia por el SARS-CoV-2 en ambientes escolares].

The COVID-19 pandemic has imposed several dilemmas for managers in the public sector, with school reopening being among the most complex decisions. The present article presents a microsimulation model of the pandemic course considering various scenarios within the confines of a classroom in the city of Belo Horizonte, Brazil. For that, a susceptible-infectious-recovered (SIR) model was integrated with a random graph model, associating epidemiological characteristics with sociometric and sociodemographic factors.

Is social cohesion produced by weak ties or by multiplex ties? Rival hypotheses regarding leader networks in urban community settings.

In his seminal work, Mark Granovetter (1973) challenged sociologists to test sociometric hypotheses regarding collective action in communitarian settings. In this article, we tested the two main hypotheses which consider social cohesion in communitarian urban settings-these being firstly cohesion by weak ties and secondly cohesion by multiplex ties. We studied the elite leaders of two slum communities of Belo Horizonte (Brazil).