Only few emit sufficient virus to be infectious via aerosols – but this is still bad news!

We published a model to estimate viral aerosol emissions from simulated individuals with asymptomatic to moderate COVID-19. People in the same room as a super-emitter are likely to get infected. Aerosol super-emission of viruses is a rare phenomenon but still a big public health problem. Ventilation helps, but measuring CO2 in the room is not giving the information we need.

Masks are key to resume a mostly normal life

COVID-19 is a very dangerous disease. Can we lock up everybody to prevent the spread? Yes, we can – or almost. An effective strategy that allows most of us to return to a mostly normal life should include wearing masks, washing hands and keeping them clean, and an active programme to produce safety materials.