[n] a viral hepatitis clinically indistinguishable from hepatitis B but caused by a single-stranded RNA virus; usually transmitted by parenteral means (as injection of an illicit drug or blood transfusion or exposure to blood or blood products)
Hepatitis C is a disease caused by either of two types of unclassified hepatitis-causing viruses. One version, caused by a calicivirus, spreads via water. The other, from a togovirus, tends to occur after blood transfusions.
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