Which hepatitis virus does not have a vaccine available?

Hepatitis C is the correct answer because, unlike hepatitis A and B, which both have effective vaccines available, there is currently no licensed vaccine for hepatitis C. Hepatitis C is caused by the hepatitis C virus (HCV) and primarily spreads through blood-to-blood contact, such as sharing needles or through transfusions of unscreened blood.

The lack of a vaccine for Hepatitis C is partly due to the virus's ability to mutate rapidly, which presents challenges in developing a stable vaccine that could effectively target it. Public health efforts to control hepatitis C largely focus on prevention strategies, including screening and treatment with antiviral medications, rather than vaccination.

In contrast, vaccines for hepatitis A and B are widely available and effective. Hepatitis A vaccination is recommended for individuals traveling to areas where the infection is common and for certain high-risk groups, while hepatitis B vaccination is standard practice for newborns and at-risk populations. Hepatitis E has a vaccine in some countries, but it’s not widely available globally, categorizing it differently than hepatitis C.