Epidemiology and Disease Classification
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Questions and Answers

If a disease occurs at a fairly stable rate, it is said to be:

  • Endemic (correct)
  • Pandemic
  • Sporadic
  • Epidemic

Expected prevalence of a disease is:

  • The number of new cases of a disease over a period of time.
  • The expected occurrence of a disease based on past observations. (correct)
  • The total number of cases of a disease over a period of time.
  • The anticipated geographical spread of a disease based on past observations.

Which of the following is an indirect infectious disease transmission mode?

  • Vehicle (correct)
  • Person to person
  • Animal
  • Environment
  • Vertical

Which of the following diseases is noncommunicable, meaning that it is not spread from person to person?

<p>Giardiasis (C)</p> Signup and view all the answers

Which of the following is not a responsibility of epidemiologists?

<p>Develop antibiotics (D)</p> Signup and view all the answers

The common cold is a(n) _________ disease.

<p>endemic</p> Signup and view all the answers

Which of the following are examples of endogenous sources of transmission?

<p>Candida albicans (pathogenic strain of yeast) (D)</p> Signup and view all the answers

If you have isolated a suspected pathogen in pure culture from a diseased laboratory animal, what would be the next step to confirm the organism is causing the disease?

<p>You should introduce it back into a healthy animal model, and the organism should display the same symptoms.</p> Signup and view all the answers

During which of the five stages of disease would you expect first symptoms to appear?

<p>During the prodromal phase (B)</p> Signup and view all the answers

An ________ is a widespread disease outbreak in a particular region during a specific time frame.

<p>epidemic</p> Signup and view all the answers

If an epidemic spreads to numerous countries it is called a(n) _______.

<p>pandemic</p> Signup and view all the answers

The _______ of an infectious agent is the animate or inanimate habitat where the pathogen is naturally found.

<p>reservoir</p> Signup and view all the answers

Vertical transmission, a specialized form of ____________, occurs when the pathogen passes from mother to offspring during pregnancy, during delivery, or through breast milk.

<p>direct contact transmission</p> Signup and view all the answers

The time when the replication of the infectious agent is brought under control and symptoms start to resolve is called the:

<p>Period of decline (A)</p> Signup and view all the answers

Which of the following is not a strategy used to break the epidemiological triangle?

<p>Alternative prevention (A)</p> Signup and view all the answers

True or False: Bacteria are the most common cause of HAIs.

<p>True (A)</p> Signup and view all the answers

Select all the most common bacterial pathogens that are associated with HAIs.

<p>Staphylococcus aureus (A), Clostridium difficile (B)</p> Signup and view all the answers

Which of the following terms describes the total number of persons afflicted with a particular infectious disease in the entire population?

<p>Prevalence (A)</p> Signup and view all the answers

Transmitting illness via food is what type of transmission?

<p>vehicle transmission</p> Signup and view all the answers

Study Notes

Disease Classification

  • A disease occurring at a stable rate in a specific area is known as endemic.
  • Expected prevalence is determined by the anticipated occurrence of a disease based on historical data.

Modes of Disease Transmission

  • Indirect infectious disease transmission can happen through vehicles.
  • Noncommunicable diseases do not spread between individuals; an example is Giardiasis.
  • Endogenous transmission sources include pathogenic organisms like Candida albicans.

Epidemiology Responsibilities

  • Epidemiologists focus on controlling disease vectors, quarantining infectious patients, and providing public education.
  • The development of antibiotics is not a direct responsibility of epidemiologists.

Disease Phases

  • The common cold is classified as an endemic disease.
  • Symptoms first appear during the prodromal phase.
  • The period when an infectious agent's replication is controlled and symptoms begin to resolve is called the period of decline.

Outbreak Terminology

  • A widespread disease within a region during a specific time frame is termed an epidemic.
  • If an epidemic extends globally, it is labeled a pandemic.
  • The reservoir is where a pathogen naturally resides, either in animate or inanimate forms.

Transmission Types

  • Vertical transmission occurs when pathogens transfer from mother to offspring, classified as direct contact transmission.
  • Transmitting illness through contaminated food is categorized as vehicle transmission.

Public Health Facts

  • True: Bacteria are the most common causes of healthcare-associated infections (HAIs).
  • Common HAIs include pathogens like Staphylococcus aureus and Clostridium difficile.
  • Prevalence refers to the total number of individuals afflicted with an infectious disease within a population.

Epidemiological Strategies

  • Common strategies to break the epidemiological triangle include public education, quarantine, and vector control.
  • Alternative prevention methods are not considered a standard strategy in epidemiology.

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Description

Explore the concepts of disease classification, modes of transmission, and the responsibilities of epidemiologists. This quiz covers the phases of diseases, including endemic conditions and their impact on public health. Test your knowledge of epidemiological principles through engaging questions.

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