Chain of Infection Quiz

Which of the following is NOT a component of the chain of infection?

• Infectious Agent

• Reservoir of Infection

• Mode of Transmission

• Antibiotic Resistance

What is an example of a reservoir of infection?

• Defense mechanisms

• Carrier

• Droplet

• Nutrition

Which factor is associated with the infectious agent in the chain of infection?

• Immunocompromised

• Virulence

• Droplet

• Defense mechanisms

Which of the following best describes a possible mode of transmission in the chain of infection?

• Colonization

• Inanimate object

• Airborne

• Susceptibility

A patient with poor nutrition and high physiologic stress is more likely to be affected at which stage of the chain of infection?

• Infectious Agent

• Reservoir of Infection

• Host

• Portal of Exit

Explain how the portal of entry and portal of exit contribute to the spread of infection, using examples from the chain of infection.

• They both refer to the same process of infection.

• Portal of entry is how pathogens leave the host, while portal of exit is how they enter.

• Portal of exit is how pathogens leave the host (e.g., droplets), and portal of entry is how they enter a new host (e.g., through defense mechanisms).

• Both are only relevant to immunocompromised individuals.

Which of the following scenarios best illustrates the concept of "mode of transmission" in the chain of infection?

• A person with a weakened immune system becomes ill.

• A bacterium survives on a doorknob and is picked up by another person.

• A virus mutates to become more virulent.

• An animal is colonized by a microorganism.

Which of the following is NOT listed as a type of pathogen in the risk for infection diagram?

• Mycoplasmas

• Prions

• Helminths

• Erythrocytes

Which of the following is an example of a reservoir for infection according to the diagram?

• Animate

• Portal of exit

• Portal of entry

• Susceptible host

According to the diagram, which of the following is a portal of exit for pathogens?

• Gastrointestinal tract

• Malnutrition

• Chronic disease

• Contact