31 Questions
What is epidemiology?
The study of the distribution and determinants of health-related states and events in populations
What is the definition of a communicable disease?
An illness due to a specific infectious agent or its toxic products capable of being transmitted in various ways
What does the epidemiologic triad consist of?
Host, Agent, and Environment
What are the components of the infectious disease model?
Pathogen, Host, and Agent
Why is it important to study communicable diseases epidemiology?
To study the possibility that some chronic diseases have an infective origin
What is the term for the lodgment, development, and reproduction of arthropods on the surface of the body or in clothing?
Infestation
Which statement best defines the scope of epidemiology?
It studies the distribution and determinants of health-related states and events in populations
Which term describes the entry and development or multiplication of an infectious agent in the body of humans or animals?
Infection
What is the term for a person or animal that affords subsistence or lodgement to an infectious agent under natural conditions?
Host
What term is used for the presence of an infectious agent on a body surface, clothes, beddings, or other articles?
Contamination
What do you call an insect or any living carrier that transports an infectious agent from an infected individual to a susceptible individual?
Vector
Which term refers to the number of new cases of an infectious disease in a given time period?
Incidence
What is the term for the natural habitat of an infectious agent where it normally lives and multiplies?
Reservoir
What is the term for the number of cases of an infectious disease at a given time?
Prevalence
Which term describes a contagious disease that is transmitted through contact?
Contagious disease
What does epidemiology study?
The distribution and determinants of health-related states and events in populations
What are the components of the epidemiologic triad?
Host, agent, environment
What is the definition of a communicable disease?
An illness due to a specific infectious agent capable of being directly or indirectly transmitted
Why is studying communicable diseases epidemiology important?
To understand the origin of chronic diseases
What does the infectious disease model consist of?
Pathogen, host, environment
Which term best describes the natural habitat of an infectious agent where it normally lives and multiplies?
Environment
What term describes the lodgment, development, and reproduction of arthropods on the surface of the body or in clothing?
Infestation
What is the term for the natural habitat of an infectious agent where it normally lives and multiplies?
Reservoir
What term is used for the presence of an infectious agent on a body surface, clothes, beddings, or other articles?
Contamination
Which term describes an insect or any living carrier that transports an infectious agent from an infected individual to a susceptible individual?
Vector of infection
What term refers to the entry and development or multiplication of an infectious agent in the body of humans or animals?
Infection
What term describes the lodgment, development, and reproduction of parasitic worms in the gut?
Infestation
What is the term for the presence of an infectious agent on clothes, beddings, toys, surgical instruments, or other articles?
Contamination
Which term refers to the number of new cases of an infectious disease in a given time period?
Incidence
Which term describes an insect or any living carrier that transports an infectious agent from an infected individual or its wastes to a susceptible individual or its food?
Vector (source)
What is the term for a person or an animal that affords subsistence or lodgement to an infectious agent under natural conditions?
Host
Study Notes
Epidemiology and Communicable Diseases
- Epidemiology is the study of the distribution and determinants of health-related events, diseases, or health-related characteristics among populations.
- A communicable disease is a disease that can be transmitted from one person to another or from an animal to a person.
- The epidemiologic triad consists of agent, host, and environment.
Infectious Disease Model
- The infectious disease model consists of agent, host, and environment.
- Agent refers to the infectious substance or organism that causes disease.
- Host refers to the person or animal that can be infected.
- Environment refers to the external factors that contribute to the spread of disease.
Key Terms
- Vector: an insect or any living carrier that transports an infectious agent from an infected individual to a susceptible individual.
- Reservoir: a person or animal that affords subsistence or lodgement to an infectious agent under natural conditions.
- Fomite: the presence of an infectious agent on a body surface, clothes, beddings, or other articles.
- Portal of entry: the entry and development or multiplication of an infectious agent in the body of humans or animals.
- Incidence: the number of new cases of an infectious disease in a given time period.
- Prevalence: the number of cases of an infectious disease at a given time.
- Habitat: the natural habitat of an infectious agent where it normally lives and multiplies.
Importance of Studying Communicable Diseases Epidemiology
- It is important to study communicable diseases epidemiology to understand the causes and distribution of diseases, which can inform public health policy and prevention strategies.
Miscellaneous
- Infestation refers to the lodgment, development, and reproduction of arthropods on the surface of the body or in clothing.
- Infection refers to the entry and development or multiplication of an infectious agent in the body of humans or animals.
- Infestation can also refer to the lodgment, development, and reproduction of parasitic worms in the gut.
Test your knowledge of the principles of infectious diseases epidemiology and prevention of communicable diseases with this quiz. Topics include the definition of epidemiology, the epidemiologic triad, and the study of distribution and determinants of health-related states and events in populations.
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