I'm really worried because someone I know has been a COVID patient since April 8th. We retested after 17 days, and its still positive. The CT scan shows a CORADS6 and a severity score of 6 out of 25, with findings like patchy areas of ground glass, septal thickening, and vascular issues suggesting viral pneumonia. I'm not sure what steps to take next or which medicines should be considered. Can you help?