Most common chronic viral illness is caused by:

Ans. (c) Hepatitis CRef.: Harrison 18th edition, chapter 306* Chronic hepatitis follows acute hepatitis C in 50-70% of cases; chronic infection is common even in those with a return to normal in aminotransferase levels after acute hepatitis C, adding up to an 85% likelihood of chronic HCV infection after acute hepatitis C.* Infection at birth with hepatitis B is associated with clinically silent acute infection but a 90% chance of chronic infection, while infection in young adulthood in immunocompetent persons is typically associated with clinically apparent acute hepatitis but a risk of chronicity of only approximately 1%.