Is a vaccine available for hepatitis B?

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Vaccines exist to prevent hepatitis B. The hepatitis B vaccine is a recombinant protein vaccine that trains the immune system to produce protective antibodies against the virus’s surface antigen. It’s given in a multi-dose schedule and is widely recommended for newborns, children, and adults at risk, with many countries including it in routine immunization programs. It is used for prevention, not treatment, of infection. Because an effective vaccine is available and routinely used, the statement is true. The other options don’t fit because the vaccine is not limited to adults, it is available, and it’s not a non-existent intervention.