Case Concepts
A person in a population who has been identified as having a particular disease, disorder, injury or condition
What is a case?
Habitat in or on which an infectious agent lives, grows, and multiplies
What is a reservoir?
contains, spreads, or harbors an infectious organism
What is a carrier?
Uninterrupted and immediate transfer of an infectious agent from one person to another
What is direct transmission?
invertebrate animal that transmits infection by conveying the infectious agent from one host to another
What is a vector?
individual who has been exposed to an harbors a disease-causing organism
What is an active carrier?
When an agent is transferred or carried by some intermediate item, organism or means
health screening and detection activities used to identify diseases
What is secondary prevention?
First disease case brought to the attention to the epidemiologist
What is a index case?
Inanimate object that can harbor an infectious agent and is capable of being a means of transmission
What is a fomite?
Individual who has been exposed to and harbors a pathogen but has not become ill or shown any symptoms
What is a healthy carrier?
When the pathogen undergoes changes as part of its life cycle while within the host
What is biological transmission?
Needs behavior change in the individual
What is active primary prevention?
an individual who has all the signs and symptoms of a disease or condition but has not been diagnosed as having the disease or not been diagnosed
What is a suspect case?
An infectious organism in vertebrate animals
What is a zoonosis?
An individual who harbors a pathogen and is still infectious
What is a convalescent carrier?
An arthropod that conveys the infectious agent
What is vector-borne tranmission
What is a tertiary prevention?
Looking at several variables that are affective measures of it
What is case severity?
nonliving intermediary that conveys the infectious agent from its reservoir to a susceptible host
What is a vehicle?
an individual who has been exposed to and harbors a pathogen and who can spread the disease in different places or intervals
What is a intermittent carrier?
When a pathogen spreads using a host as a mechanism for a ride for nourishment
What is mechanical transmission?
attempt to restore an afflicted person to a useful, productive and satisfying lifestyle
What is rehabilitation?