What is already known about this topic?
The rapid spread of the pandemic caused by the severe acute respiratory
syndrome coronavirus 2 (SARS-CoV-2) (COVID-19) virus has resulted in
governments around the world instigating a range of measures to limit
spread and facilitate economical recovery.
One of these measures, adopted by several countries, includes the use of
face coverings in enclosed spaces were social distancing is not
possible, including public transport.