Which statement is NOT a reason for vaccines?

• A. Stop/slow spread of disease
• B. Build community immunity
• C. Protect those who can't vaccinate
• D. Cures infections once contracted

Answer: (D)

Vaccines are preventive tools that train the immune system before exposure to a pathogen, aiming to stop or slow the spread of disease and to build community immunity. When enough people are immune, transmission is reduced, protecting even those who can’t be vaccinated by lowering the overall amount of circulating pathogen. This protection is especially important for individuals who cannot receive vaccines themselves, such as those with certain medical conditions, because they rely on others’ immunity for protection. Vaccines do not cure infections once they occur; once someone is already infected, treatment with appropriate medications and medical care is needed to help clear the infection.