The coronavirus can be very dangerous for some people especially for children, babies, toddlers and older adults.
The younger you are and the older you are the worse the coronavirus is for you.
You need to seek medical treatment if you think you may have or you have the coronavirus as there have been several people who have already died as a result of the coronavirus.
Even when you get treatment for the coronavirus the coronavirus can still cause death but getting treatment increases your chance of survival.
There's no real cure as of now for the coronavirus but treatments can help.
As of January 2020 there have been several people who have died from the coronavirus so by that I would say that the coronavirus is a pretty serious and dangerous virus.