1) Covid 19 cases could be moderate, severe or critical
2) At first it could feel like a flu…
3) how the virus damages the lungs
4) Some Moderate cases can lead to mild or severe pneumonia and clear up in days while critical cases leads to acute respiratory distress
5)When ventilators and extra oxygen are needed
Patients in their recovery period are still very contagious, but they need to work with health officers to ascertain when they are no longer a risk.
There is no vaccine for the virus at this point, the best way to avoid being exposed to the Virus
Source -Tech insider