Which of the following is NOT a benefit of vaccinations?

The correct choice identifies "immediate treatment of existing diseases" as not being a benefit of vaccinations. Vaccinations are preventive measures designed to stimulate the immune system to develop immunity to specific infections before exposure occurs. They work by introducing antigens into the body, so that the immune system can recognize and combat the pathogens later.

While vaccinations significantly reduce the incidence of diseases, enhance herd immunity, and can even increase self-efficacy by empowering individuals to protect themselves and their communities, they do not treat diseases that are already present. Once a person is infected with a disease, vaccines are not effective in treating that existing condition; instead, treatment would typically involve medical interventions like antiviral drugs, antibiotics, or supportive care, depending on the illness.

By focusing on prevention rather than treatment of active diseases, vaccines play a crucial role in public health, dramatically reducing transmission rates and protecting vulnerable populations.