In risk management for vector-borne diseases, why is vaccination where available included in protective measures?

• A. It should be used in combination with other measures
• B. It adds an additional layer of protection against infection
• C. It has no effect
• D. It is optional

Answer: (B)

Vaccination is part of a layered protection approach in risk management for vector-borne diseases. While controlling vectors and using personal protection reduce risk, they don’t eliminate it entirely—breaches, imperfect protection, or exposure can still occur. Vaccination lowers the chance of infection and disease if exposure happens, adding an extra barrier that strengthens overall protection. In populations with high vaccine coverage, it can also reduce transmission, further lowering risk.

The other options don’t capture this additive protective effect as clearly: vaccination isn’t pointless or optional when available, and while it’s best used with other measures, the key reason it’s included is that it provides an additional layer of protection against infection.