Public Health Terms
Event Categorizations
Case Types
Disease Transmission Concepts
Carriers
100

The ability of a public health measure to produce benefits among those who are offered said public health measure.

What is effectiveness?

100

An epidemic affecting the population of an extensive region, country, or continent.

What is pandemic?
100

A person in a population who has been identified as having a particular disease, disorder, injury, or condition.

What is a case?

100

Contains, spreads, or harbors an infectious organism.

What is a carrier?

100
An individual who has been exposed to and harbors a pathogen, is in the beginning stages of the disease, is displaying  symptoms, and has the ability to transmit the disease.

What is an incubatory carrier?

200

A behavior, environment exposure, or inherent human characteristic that is associated with an important health condition.

What is risk factor?

200

The occurrence of cases of an illness specific, health-related behavior, or other health-related events clearly in excess of normal expectancy in a community or region.

What is epidemic?

200

An individual (or group of individuals) who has all of the signs and symptoms of the symptoms connected to a suspected pathogen.

What is a suspect case?

200

A nonliving intermediary such as a fomite, food, or water that conveys the infectious agent from its reservoir to a susceptible host.

What is a vehicle?

200

An individual who harbors a pathogen and who, although in the recovery phase of the course of the disease, is still infectious.

What is a convalescent carrier?

300

The ability of a public health measure to produce a desire effect among those who participate in the public health measure compared with those who do not.

What is efficacy?

300

Refers to the ongoing, usual, or constant presence of a disease in a community or among a group of people.

What is endemic?

300

Persons who become infected and ill after a disease has been introduced into a population and who become infected from contact with the primary case.

What is a secondary case?

300

The habitat in or on which an infectious agent lives, grows, multiplies, and on which it depends for its survival in nature.

What is a reservoir?

300

Individual who has been exposed to and harbors a disease-causing pathogen and who has done so for some time, even though the person may have recovered from the disease.

What is an active carrier?

400

Involves finding and quantifying associations, testing hypotheses, and identifying causes of health-related states or events.

What is analytic epidemiology?

400

An epidemic type where it arises from a specific source; generally not infectious person to person.

What is common-source epidemics?

400

The first disease case in the population.

What is a primary case?

400

An object such as a piece of clothing, a door handle, or a utensil that can harbor an infectious agent and is capable of being a means of transmission.

What is a fomite?

400

An individual who has been exposed to and harbors a pathogen but has not become ill or shown any of the symptoms of the disease.

What is a healthy carrier?

500

Involves characterization of the distribution of health-related states or events.

What is descriptive epidemiology?

500

An epidemic type that arises from infections transmitted from one infected person to another.

What is propagated epidemics?

500

The first disease case brought to the attention of the epidemiologist.

What is index case?

500

An infectious organism in vertebrate animals that can be transmitted to humans through direct contact, a fomite, or a vector.

What is zoonosis?

500

An individual who has been exposed to and harbors a pathogen and who can spread the disease in different places or at different intervals.

What is an intermittent carrier?