The most common infectious causes of hepatitis are viral with hepatitis viruses A, B, and C (HAV, HBV, HCV) responsible for the most morbidity. Effective vaccines against hepatitis A and hepatits B are available. A vaccine against hepatitis C remains elusive. Let's test your knowledge of the hepatitis A, B, Cs.
1. According to CDC estimates, which of the 3 hepatitis viruses caused the most new cases of infection in 2013?
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