An initial first impression is that this (COVID-19) is significantly milder than SARS, so that's reassuring. On the other hand, it may be more transmissible than SARS, at least in the community setting. Eric Toner (2020)
I have thought for a long time that the most likely virus that might cause a new pandemic would be a coronavirus. We don't yet know how contagious it (COVID-19) is. We know that it is being spread person to person, but we don't know to what extent. Eric Toner (2020)