A few factors to consider:
Community transmission is a big big deal. The virus is in the wild, and you can get it without knowing how or where you got it from. Hogan announced yesterday that this has already begun to happen in Maryland, and that is why schools are closed.
You are contagious before you feel sick. This means that testing is a trailing indicator of how many people you have already infected. Testing doesn't help prevent the spread of the disease, and since we don't have a cure, it doesn't really inform treatment.
There is a good chance that the virus will wane over the summer, will mutate slightly and will come back like gangbusters next fall and winter. The seasonal flu does this. The common cold does this. The Spanish flu (1918) did this, but the second wave was far more deadly than the first. They think that the people who got sick during the first wave of Spanish flu were conferred some immunity to the second wave.
80% of the infected will recover with minor to moderate symptoms. 20% will have major symptoms requiring medical intervention or hospitalization. 1% will die. These numbers have been fairly consistent over time, and correcting for outliers.
