In an outbreak where the agent persists in the environment and is transmitted directly and indirectly, which transmission route is high risk and should be focused on for control?

• A. Fomite transmission
• B. Vector-borne transmission
• C. Airborne transmission
• D. Direct contact

Answer: (A)

When the agent can persist in the environment and spread through both direct and indirect contact, contaminated surfaces become a major source of infection. Fomite transmission happens when people touch objects that harbour the pathogen and then touch their face, introducing the agent. Environmental survival means many objects people handle—doors, utensils, medical equipment—can carry the risk, so cleaning and disinfection of these surfaces, along with thorough hand hygiene and minimizing sharing of items, can substantially cut transmission. While direct contact and other routes can contribute, addressing transmission via contaminated surfaces targets the pathway most amplified by environmental persistence.