Transmission
Prevention
Carrier
Epidemiology General Terms
Case
100

an infectious agent is transferred from a reservoir to a susceptible host by direct contact or droplet spread.

What is Direct transmission

100

aims to prevent disease or injury before it ever occurs

What is Primary prevention

100

One who harbors a pathogenic organism for a clinically significant time and is able to pass the infection to others

What is Active carrier

100

a widespread occurrence of an infectious disease in a community at a particular time

What is epidemic

100

refers to the person who first brings a disease into a group of people—a school class, community, or country

What is Primary case

200

the transfer of an infectious agent through a contaminated inanimate object.

What is Indirect transmission

200

screening to identify diseases in the earliest stages, before the onset of signs and symptoms

What is Secondary prevention

200

People who never experience symptoms despite being infected.

What is passive carriers

200

(of a disease) prevalent over a whole country or the world.

What is pandemic

200

individuals who contracted the illness through exposure to a primary case, rather than the outbreak source itself

What is Secondary case

300

involving the inhalation of infectious aerosols or “droplet nuclei” smaller than 5 μm

What is Airborne transmission

300

rehabilitation and efforts to prevent disease progression after an injury or event has occurred

What is Tertiary prevention

300

those who have recovered from their illness but remain capable of transmitting to others

What is Convalescent carrier

300

(of a disease or condition) regularly found among particular people or in a certain area.

What is Endemic

300

a case that is classified as suspected for reporting purposes

What is Suspect case

400

infections transmitted by the bite of infected arthropod species, such as mosquitoes, ticks, triatomine bugs, sandflies, and blackflies.

What is Vector-borne transmission

400

legislation and enforcement to ban or control the use of hazardous products

What is Active primary prevention


400

those who can transmit the agent during the incubation period before clinical illness begins

What is Incubatory carrier

400

includes both common-source and propagated outbreak characteristics

What is Mixed epidemic

400

first documented patient in a disease epidemic within a population, or the first documented patient included in an epidemiological study

What is Index case

500

an indirect transmission process during which the pathogen is indirectly transferred from a reservoir, source or host to another host by inanimate intermediary vehicle objects.

What is Vehicle-borne transmission

500

strategies are those that do not require action by an individual for protection to occur

What is Passive primary prevention

500

One who harbors an infectious organism, e.g., methicillin-resistant Staphylococcus aureus in the nasal passages, from time to time but not continuously

What is Intermittent carrier

500

an external agent, a host and an environment in which the agent and host meet.

What is Epidemiology triangle

500
disease which can be transmitted to humans from animals.

What is Zoonosis