[reyntime]

81% of cases are mild. Most (younger) people are unlikely to develop severe or critical symptoms. However, it affects people more the older they are, and people should still be wary of the virus and practice safe hygiene - wash hands regularly with soap, use hand sanitiser, don't touch your face, sneeze and cough into a tissue or your upper arm, and isolate yourself at home if you're sick. Asymptomatic people can still carry the virus and pass it onto people who can be severely affected.

So people are unperturbed because it's unlikely to be serious for them, but they should worry about the effect it will have on the population at large.