Hepatitis C is a contagious liver disease caused by the Hepatitis C virus. It is usually spread through contact with blood from someone who is infected with Hepatitis C, through sharing needles, syringes or equipment to inject drugs. For more information on Hepatitis C:
https://www.cdc.gov/hepatitis/HCV/PDFs/HepCGeneralFactSheet.pdf
https://www.healthline.com/health/hepatitis-c/effects-on-the-body#1