Occupational Safety and Health Administration (OSHA) SLC Practice Exam

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Which of the following is NOT a mode of transmission for infections?

Droplet transmission
Vectorborne transmission
Vehicleborne transmission
Indirect contact transmission

The correct answer is: Indirect contact transmission

Indirect contact transmission is indeed a recognized mode of transmission for infections. This method occurs when infectious agents are transferred from one person to another through contaminated surfaces or objects, where the pathogen can survive outside a host. To clarify the other modes of transmission listed: - Droplet transmission refers to the spread of pathogens via respiratory droplets expelled when an infected person talks, coughs, or sneezes. These droplets can directly enter another person’s mucous membranes. - Vectorborne transmission involves living organisms, typically arthropods like mosquitoes or ticks, that carry pathogens from one host to another. These vectors can transmit infections such as malaria and Lyme disease. - Vehicleborne transmission occurs when pathogens are carried by inanimate objects or substances, such as food, water, or medical equipment, allowing the spread of diseases through these contaminated vehicles. Understanding these terms reinforces that indirect contact transmission is an essential aspect of understanding infection control and prevention, highlighting its role as a mode of transmission alongside the others mentioned.