
Concept explainers
1.
To determine:
The disease that the doctor should suspect and the infectious agent causes this disease.
Concept introduction:
Disease is defined as an abnormal condition of the body that disrupts important physical and physiological function of the body. Disease is caused by improper diet, lack of exercise, various infectious agents that are present in nature, toxic substances, genetic disorders, and depression, stress play a role in illness and disturbs normal functioning of the body.
2.
To determine:
How did student most likely to contract the disease.
Concept introduction:
Disease is defined as an abnormal condition of the body that disrupts important physical and physiological function of the body. Disease is caused by improper diet, lack of exercise, various infectious agents that are present in nature, toxic substances, genetic disorders, and depression, stress play a role in illness and disturbs normal functioning of the body.
3.
To determine:
What are the other symptoms student might develop.
Concept introduction:
Disease is defined as an abnormal condition of the body that disrupts important physical and physiological function of the body. Disease is caused by improper diet, lack of exercise, various infectious agents that are present in nature, toxic substances, genetic disorders, and depression, stress play a role in illness and disturbs normal functioning of the body.
4.
To determine:
What causes the symptoms of disease and why does his girlfriend not display same symptom.
Concept introduction:
Disease is defined as an abnormal condition of the body that disrupts important physical and physiological function of the body. Disease is caused by improper diet, lack of exercise, various infectious agents that are present in nature, toxic substances, genetic disorders, and depression, stress play a role in illness and disturbs normal functioning of the body.
5.
To determine:
How should the student be treated.
Concept introduction:
Disease is defined as an abnormal condition of the body that disrupts important physical and physiological function of the body. Disease is caused by improper diet, lack of exercise, various infectious agents that are present in nature, toxic substances, genetic disorders, and depression, stress play a role in illness and disturbs normal functioning of the body.

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Chapter 21 Solutions
Microbiology with Diseases by Body System (5th Edition)
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