Is there a treatment for coronavirus and what are the vulnerable grups?

There is no specific treatment but some antivirals are being used that have shown some effectiveness in recent studies. There are many treatments to control your symptoms. Being an infection caused by viruses, antibiotics shouldn't be used as a means of prevention or treatment.

The main vulnerable groups are those over 60 years of age and those diagnosticated by high blood preasure, diabetes, cardiovascular diseases, chronic lung diseases, cancer, immunodeficiencies and pregnancy by the precautionary principle.

https://www.youtube.com/watch?v=aQt-kbxrcJ8
https://www.youtube.com/watch?v=Jq0orEm2nzw