Chapter 1: Infection Cycle

Question 1

What is the first step in the cycle for the spread of infection to occur in a health care setting?

Answer 1

Infectious agent: the cycle begins with a pathogenic microorganism.

Question 2

What is the second step in the cycle for the spread of infection to occur in a health care setting?

Answer 2

Reservoir: the source of a pathogen include; people, animals, insects, plants, water, food and soil.

Question 3

What is the third step in the cycle for the spread of infection to occur in a health care setting?

Answer 3

Portal of exit: The method by which microorganism leaves the body.

Question 4

What are some common routes for exit include?

Answer 4

Blood, other fluids, feces, vomit, skin cells, respiration droplets and organ transplantation.

Question 5

What is the fourth step in the cycle for the spread of infection to occur in a health care setting?

Answer 5

Mode of Transmission: how infectious microorganisms spread.

Question 6

What is the fifth step in the cycle for the spread of infection to occur in a health care setting?

Answer 6

Susceptible Host: find a host, the person comes in contact with microorganism and does not have immunity to resist the infection.

Question 7

What is the sixth step in the cycle for the spread of infection to occur in a health care setting?

Answer 7

Portal of entry: infection enter the host.

Question 8

What are some Common sites for entrance to the human body include?

Answer 8

Non-intact skin, mucous membranes and respiratory, gastrointestinal and genitourinary tracts.