Via Fox News:
For most people, the new coronavirus causes only mild or moderate symptoms, such as a fever and cough. For some, especially older adults and people with existing health problems, it can cause more severe illness, including pneumonia.
The vast majority of people recover from the new virus. According to the World Health Organization (WHO), people with mild illness recover in about two weeks, while those with more severe illness may take three to six weeks to recover.
However, for precaution reasons, many American institutions are shutting down to stop the outbreak.