Epidemiology of hepatitis C.

Hepatitis C occurs worldwide and in all age and racial/ethnic groups studied. The most efficient transmission is through percutaneous exposure to infectious blood, but may also occur as a result of inapparent parenteral and mucosal exposure. Although hepatitis C virus may be inefficiently transmitted in some settings, the high rate of persistent infection with this virus creates a large reservoir of persons who are infectious to others, resulting in multiple opportunities for transmission to occur.

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