14 -- Part 1: Principles of Disease and Epidemiology
You follow up on reports of communicable diseases as a county public health nurse.
The population of your state is 3.1 million, and the annual incidence of the disease is 7.5 cases per 100,000 people.
In the month of December, you have seen 65 cases of the disease in your county.
It is a rate that accounts for differences in population that allows us to compare occurrence of a disease in different areas.
We can consider how the human body and various microorganisms interact in terms of health and disease if we have a basic understanding of the structures and functions of microorganisms.
There are defenses that keep us healthy.
Our health is maintained when our defenses resist the pathogen's capabilities.
After the disease is established, a person may recover completely, suffer temporary or permanent damage, or die.
In the next section of the book, we look at some of the principles of infection and disease, the mechanisms by which pathogens cause disease, the body's defenses against disease, and how drugs can be used to prevent diseases.
This chapter begins with a discussion of the meaning and scope of pathology.
In the last part of the chapter, "Epidemiology," you will learn how these principles can be used to control disease.
It is important to understand the principles to prevent disease transmission in health care settings.
A typical human body contains a lot of science.
This gives you an idea of how a disease develops.
The goal is to determine the relationship between changes in the body's flora and disease.
Disease is an abnormal state in which researchers are comparing the microbiomes of part or all of the body is incapable of performing its normal healthy volunteers and volunteers with specific diseases.
There may be an infectious disease in the absence of certain organisms.
If the body is exposed to the virus dence, but it doesn't cause AIDS, it doesn't experience any symptoms of the disease.
Large weeks or months disappear.
The majority of the microorganisms are benign.
The distribution and composition of some organisms can affect the host.
Before we discuss the role of microorganisms in causing disease, chemical factors, the host's defenses, and mechanical factors, we need to look at nutrition, physical and before that the role of microorganisms in causing disease, chemical factors, the host's defenses, and mechanical factors.
Carter is in the bathroom again.
Jamil has been sick with a number of illnesses.
The man is 75 years old and lives with his wife and son.
He does not smoke or drink alcohol.
There is a contrast between normal microbiota and the UtI.
When breathing begins and feeding begins, more organisms are introduced to the newborn's body.
The body was called normal flora.
Animals with no microbiota can only be reared in sites that can provide the appropriate nutrition.
The dead cells can be used to make food in a sterile environment.
There are secretory and excretory products of cells on the one gastrointestinal tract.
A number of physical and chemical factors affect the growth of animals, and it has been shown that germ-free animals are more susceptible to infections.
There are temperature, pH, and oxygen serious disease.
Germ-free animals need more calories and carbon dioxide.
In Chapters 16 and 17 you will learn about the human body's defense against microbes.
The normal microbiota can benefit the host.
The overgrowth of harmful microorganisms can be prevented.
Competition among parts of the body can be caused by mechanical microbes.
The forces that may affect colonization are a consequence of this competition.
The chewing actions of the teeth and tongue can cause harmful substances to be produced by the invading microbes and faces.
The flow of saliva in the gastrointestinal tract can affect certain conditions.
Disease can occur when the balance between the normal and the bad microbiota in the throat is upset.
The adult human vagina has a local pH of microbes.
The over which cilia propel toward the throat is affected by the presence of normal microbiota.
The host's body balance between normal microbiota and pathogens can be upset and site can vary from one person to another.
When the pH is changed, there are a number of factors.
Some distinctive features of each region are listed in the large intestine.
The growth of otherbacteria of the same or closely cally is discussed more in Part Four.
The low ph of the skin protects it from many microbes.