How does vector control fit into management of biological agents like plague?

• A. Vaccinating all exposed individuals immediately.
• B. Reducing vector populations (fleas, animals) helps prevent transmission and supports outbreak containment.
• C. Relying solely on antibiotics without vector control.
• D. Vector control is not relevant.

Answer: (B)

Plague spreads mainly through fleas that bite infected rodents and then humans, so the most effective way to blunt an outbreak is to break that transmission link. Reducing flea and rodent populations and removing their habitats lowers the chance a person will be bitten by an infected flea, which directly curtails new cases and helps contain the outbreak. This strategy works alongside treating those who become ill with antibiotics, but you can’t rely on antibiotics alone to prevent transmission or on immediate vaccination of exposed individuals, which isn’t practical for rapid containment. Vector control remains essential because it tackles the source of transmission itself, decreasing the overall spread of infection.