The way in which an infectious disease is spread: contact, airborne, by vehicles, or by vectors, is described by which term?

The way in which an infectious disease is spread: contact, airborne, by vehicles, or by vectors, is described by which term?

• A. Transmission
• B. Contagion
• C. Contamination
• D. Propagation

Answer: (A)

This asks for the mechanism by which disease moves from one person to another. The best term is transmission, because it specifically describes the process of spread between hosts, including the different modes like contact, airborne, vehicles, and vectors. Contagion is often used in everyday language to describe how easily a disease spreads, but the precise concept of how it moves from person to person is transmission. Contamination refers to the presence of pathogens on surfaces or objects, not the act of spreading between people. Propagation is a general term for spreading or growing, not the specific epidemiological process.

This asks for the mechanism by which disease moves from one person to another. The best term is transmission, because it specifically describes the process of spread between hosts, including the different modes like contact, airborne, vehicles, and vectors. Contagion is often used in everyday language to describe how easily a disease spreads, but the precise concept of how it moves from person to person is transmission. Contamination refers to the presence of pathogens on surfaces or objects, not the act of spreading between people. Propagation is a general term for spreading or growing, not the specific epidemiological process.