$$ \frac{50}{10,000} \times 1,000 = 5 $$

Question 1

Which of the following best describes the relationship between a host and a pathogen in terms of symbiosis?

Accepted Answer

Parasitism, where the pathogen benefits at the expense of the host

Question 2

A patient contracts influenza after being exposed to the virus in a crowded subway. Which type of transmission does this scenario illustrate?

Accepted Answer

Droplet transmission

Question 3

Which of the following is an example of a biological vector in the transmission of infectious diseases?

Accepted Answer

A mosquito carrying Plasmodium species

Question 4

Which public health intervention is most effective in reducing the spread of a communicable disease during an epidemic?

Accepted Answer

Implementing quarantine and isolation measures

Question 5

Which of the following best defines an endemic disease?

Accepted Answer

A disease that is constantly present in a population or region

Question 6

Which of the following is a correct example of a noncommunicable infectious disease?

Accepted Answer

Tetanus

Question 7

A hospital reports 50 new cases of a disease in a population of 10,000 over one month. What is the incidence rate per 1,000 individuals?

Accepted Answer

$$ \frac{50}{10,000} 	imes 1,000 = 5 $$

Question 8

Which of the following is NOT a function of microbial extracellular enzymes in pathogenesis?

Accepted Answer

Enhancing host immune response

Question 9

Which term describes a disease that appears suddenly and affects many individuals in a community or region at the same time?

Accepted Answer

Epidemic

Question 10

Which of the following best describes the difference between a sign and a symptom of disease?

Accepted Answer

A sign is measurable by others, while a symptom is felt by the patient

Question 11

Which of the following is a correct sequence of the five typical stages of infectious disease?

Accepted Answer

Incubation, prodromal, illness, decline, convalescence

Question 12

Which of the following best describes the role of adhesion factors in microbial pathogenesis?

Accepted Answer

They enable microbes to attach to host cells and tissues

Question 13

A disease is described as sporadic. What does this mean?

Accepted Answer

It occurs at irregular intervals and in unpredictable locations

Question 14

Which of the following is a communicable disease?

Accepted Answer

Salmonella infection

Question 15

Which of the following best describes the difference between acute and chronic diseases?

Accepted Answer

Acute diseases have a rapid onset and short duration; chronic diseases develop slowly and persist over time

Question 16

Which of the following is an example of a fomite in disease transmission?

Accepted Answer

A contaminated doorknob

Question 17

Which of the following is a major role of public health agencies in controlling infectious diseases?

Accepted Answer

Monitoring disease outbreaks and implementing control measures

Question 18

Which of the following is a correct example of a pandemic?

Accepted Answer

COVID-19 spreading across multiple continents

Question 19

Which of the following is a correct definition of the term 'contagious'?

Accepted Answer

A disease that can be transmitted easily from person to person

Question 20

Which of the following best describes the role of toxins in microbial pathogenesis?

Accepted Answer

Toxins damage host tissues and disrupt normal cellular functions

Ch 14 study guide

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