Question and answers 100% correct
2025/2026
One of the basic concepts in epidemiology is the concept of risk. Which of the following statements best
defines risk?
a. The prevalence of an event occurring over a lifetime.
b. The probability that an event will occur within a specified time period.
c. The proportion of the population that will develop an event.
d. The rate of development of new cases. - correct answer ✔b. The probability that an event will occur
within a specified time period.
A breast cancer screening program screened 8000 females. They discovered 35 females previously been
diagnosed with breast cancer and 20 females with no previous history of breast cancer diagnosed as
result of the screening. The incidence proportion would reflect
a. newly diagnosed cases of breast cancer in this population of females
b. current and past breast cancer events in this population of females
c. past breast cancer events in this population of females
d. the population of females who had no evidence of breast cancer - correct answer ✔a. Newly
diagnosed cases of breast cancer in this population of females
A business executive develops symptoms of the flu 1 day after returning by air from a cross Atlantic
business trip that ran for 2 consecutive stressful 10-hour days. This individual's development of flu
symptoms illustrates the relationship between:
a. host and agent.
,b. host, agent, and environment.
c. risk and causality.
d. morbidity and disease. - correct answer ✔b. Host, agent, and environment
Which of the following statements would indicate to a community nurse that the flu season is ending?
a. Increase in incidence and decrease in prevalence
b. Decrease in incidence and increase in prevalence
c. Increase in incidence and decrease in prevalence
d. Decrease in incidence and decrease in prevalence - correct answer ✔d. Decreases in incidence and
decrease in prevalence
What is a healthy diet for.... - correct answer ✔Yogurt, dried peach,
What is could be cause of the upstream condition in the population? - correct answer ✔Air pollution
Which of the following best describes disease?
1. Results in inability to perform at desired level
2. Something that is individualized
3. Is a subjective experience of ill health
4. Is an objective experience of ill health - correct answer ✔4. Is an objective experience of ill health
For infectious disease, how the simple/ easiest way to break the chain of infection. - correct answer
✔Washing hand
In chain of infection, how the germs get out (Portal of exit) - correct answer ✔Mouth (vomit, saliva),
cuts in the skin (blood), During diapering and toileting (stool)
, How the germs get in (portal of entry) - correct answer ✔Mouth, cut in the skin, eyes
How the germs get around (mode of transmission) - correct answer ✔Contact (hands, toys, sand),
droplets (sneeze, cough, speak)
Next sick person (susceptible host) - correct answer ✔Babies, children, elderly People with a weakened
immune system, unimmunized people, anyone
The nurse is gathering community assessment data about concerns of the elderly. Which term best
describes the group of elders in this situation?
a. Community
b. Neighborhood
c. Population
d. Aggregate - correct answer ✔d. Aggregate
Which of the following is the most accurate about the determinants of health?
a. If a pathogenic organism can be shown to cause a disease, no other determinants are relevant
b. They reflect underlying forces that are at work in the subsequent development of disease.
c. One determinant is operating to bring about each disease
d. Each determinant can usually be traced to specific diseases - correct answer ✔b. They reflect
underlying force that are at work in the subsequent development of disease.
What is illness? - correct answer ✔The experience of being sick, perception of and reaction to a
physical/psychological condition, subjective