Which transmission mode is primarily person-to-person through direct contact?

Which transmission mode is primarily person-to-person through direct contact?

• A. Contact transmission
• B. Airborne transmission
• C. Droplet transmission
• D. Common vehicle transmission

Answer: (A)

Direct contact transmission occurs when infectious agents pass from an infected person to a susceptible person through physical touch. This mode is inherently person-to-person because the transfer happens through direct interaction—such as touching, hand contact, kissing, or sexual contact—without needing an intermediate object or environmental medium. The key idea is that the transfer happens in the moment of contact between two people. In contrast, airborne transmission involves tiny particles that remain suspended in the air and can travel longer distances to reach others; droplet transmission involves larger respiratory droplets that typically travel only short distances before settling; and common vehicle transmission happens when a contaminated substance or object (like water, food, or a medical device) serves as a vehicle to spread the agent to multiple people. Because it describes direct, immediate transfer between individuals, direct contact transmission best captures the scenario of a primary person-to-person route through direct touch.

Direct contact transmission occurs when infectious agents pass from an infected person to a susceptible person through physical touch. This mode is inherently person-to-person because the transfer happens through direct interaction—such as touching, hand contact, kissing, or sexual contact—without needing an intermediate object or environmental medium. The key idea is that the transfer happens in the moment of contact between two people.

In contrast, airborne transmission involves tiny particles that remain suspended in the air and can travel longer distances to reach others; droplet transmission involves larger respiratory droplets that typically travel only short distances before settling; and common vehicle transmission happens when a contaminated substance or object (like water, food, or a medical device) serves as a vehicle to spread the agent to multiple people. Because it describes direct, immediate transfer between individuals, direct contact transmission best captures the scenario of a primary person-to-person route through direct touch.