Modes of Transmission
Types of Prevention
The Triangle
The Chain of Infection
Miscellaneous
100

This occurs when infectious agents are carried by dust or droplet nuclei suspended in the air.

What is airborne transmission?

100

This type of prevention refers to screening in order to identify diseases in the earliest stages. An example would be a mammogram.

What is secondary prevention?

100

This factor of the triangle impacts opportunity for exposure.

What is environment?

100

An example of this indirect transmission would be food, water, biological products, and fomites, or inanimate objects.

What is vehicle-borne transmission?
100

This is referred to as the ability to produce a desired or intended result.

What is efficacy?

200

Sneezing, coughing, or even talking are examples of this direct type of transmission.

What is droplet spread?

200

This type of primary prevention requires some sort of behavioral change on the part of the individual.

What is active prevention?

200

This factor of the triangle deals with the duration of the disease spread.

What is time?

200

This refers to the manner in which a pathogen enters a susceptible host.

What is portal of entry?
200

This type of outbreak occurs when a group of persons are all exposed to an infectious agent or a toxin from the same origin.

What is common-source?

300
This mode of transmission occurs through skin-to-skin contact.
What is direct contact?
300

This type of prevention refers to intervention before health effects occur.

What is primary prevention?

300

This model of disease causation consists of four factors involved in the development for infectious diseases.

What is the Epidemiology Triangle?

300

The transmission of infection occurs once the pathogen leaves what?

What is the reservoir?

300
This type of epidemiology is concerned with the search for causes and effects, or the why and how.

What is analytic epidemiology?

400

This refers to the transfer of an infectious agent from a reservoir to a host by suspended air particles and inanimate objects. 

What is indirect transmission?
400

This type of prevention refers to managing disease post diagnosis to slow or stop disease progression. Chemotherapy would be an example. 

What is tertiary prevention?

400

This factor of the triangle impacts exposure susceptibility and response.

What is host?

400

This is the path by which a pathogen leaves its host.

What is portal of exit?

400

This is the first identified case in a group of related cases of a particular communicable or heritable disease.

What is an index case?

500

Mosquitoes, fleas, and ticks are all examples of this type of infectious agent.

What is a vector?

500
This type of primary prevention requires no voluntary effort.
What is passive prevention?
500

This factor of the triangle is referred to as the cause.

What is infectious agent?

500

This is the final link in the chain of infection.

What is a (susceptible) host?

500

This is a disease that can be transmitted from animals to humans to animals.

What is zoonosis?
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