Select the best pair of reasons that support public vaccination programs against lethal infectious diseases.

• A. Vaccination reduces the risk of severe disease and death for individuals but has limited impact on overall population transmission.
• B. Vaccination reduces the risk of severe disease and death for individuals and reduces transmission to protect vulnerable populations.
• C. Vaccination reduces the risk of severe disease and death for individuals even when pathogen mutation lowers vaccine effectiveness.
• D. Vaccination reduces the risk of severe disease and death for individuals while requiring boosters or repeated doses to maintain population immunity.

Answer: (B)