While scholars commonly see nation-building as a modernist project or a cultural assertion, we suggest that a “third way” is equally important. Analysing data from a representative survey of 2,001 Singaporean residents collected in 2020 during the COVID-19 pandemic, we demonstrate that everyday social networks have been key to creating and maintaining Singaporean nationalism. We make the point that despite ambitious plans at transforming society, modernist projects must rely upon organic, routinised, and quotidian mechanisms such as friendship-making within and between ethnic groups for national cohesion to materialise.

A central tenet of close-contact or respiratory infection epidemiology is that infection patterns within human populations are related to underlying patterns of social interaction. Until recently, few researchers had attempted to quantify potentially infectious encounters made between people. Now, however, several studies have quantified social mixing behaviour, using a variety of methods. Here, we review the methodologies employed, suggest other appropriate methods and technologies, and outline future research challenges for this rapidly advancing field of research.