The complete clinical picture with regard to COVID-19 is not fully known. Reported illnesses have ranged from very mild
(including some with no reported symptoms) to severe, including illness resulting in death.
As of early March, there have been over 97,000 confirmed cases, with a death toll of about 3,000 (more than 2,900 in
mainland China). But these numbers are just estimates; it’s still unclear how many people have actually been infected
worldwide. Older people and people of all ages with severe underlying health conditions — like heart disease, lung
disease and diabetes, for example — seem to be at higher risk of developing serious COVID-19 illness. Most of the deaths
have been in adults over 60 years old who had other health concerns.