About This Chapter
Illnesses & Infections of the GI Tract - Chapter Summary
This mobile-friendly microbiology chapter examines common illnesses and infections of the gastrointestinal tract. Using a simplified teaching style, our instructors explain how certain types of bacteria can lead to a variety of diseases and infections, including botulism, salmonella, cholera, dysentery and other types of food poisoning. We've included short self-assessment quizzes to help you reinforce your understanding of bacterial terminology, infection treatments and illness symptoms. You can work through the chapter at your own pace using any Internet-connected device. Upon completion of the chapter, you should be able to:
- Evaluate food poisoning caused by bacterium clostridium botulinum, salmonella and campylobacter bacteria
- Identify common E.coli strains
- Compare E. coli O157:H7 infections, diagnoses, treatment and prevention
- Describe the symptoms of typhoid fever
- Analyze food poisoning from clostridium perfringens, clostridium perfringens enterotoxin and staphylococcus aureus bacteria
- Discuss the causes, symptoms, treatment and prevention of cholera
- Recognize the characteristics of ulcers
- Assess brucella bacteria and brucellosis
- Understand how bacteria shigella causes dysentery
1. What Is Botulism? - Food Poisoning Caused By the Bacterium Clostridium botulinum
The most toxic natural substance on Earth is not the venom of a snake or spider. Instead, it is a toxin made by a bacterium called Clostridium botulinum. We will examine Botulism, a type of food poisoning caused by this toxin.
2. Salmonella: Symptoms of Food Poisoning Caused By Salmonella
There is a very good reason for not eating raw cookie dough, despite how delicious it is. In this lesson, we will look at Salmonella, a bacterium often found in the dough's raw eggs, which can cause a serious case of foodborne illness.
3. What Is Campylobacter? - Infection Caused By Campylobacter Bacteria
You always hear about the dangers of eating undercooked chicken. In this lesson, we will examine Campylobacter, one common cause of bacterial food-borne infection acquired by eating raw poultry.
4. E. Coli: Common Strains and Pathogenic Varieties of E. Coli Bacteria
For each bacterial species, like E. coli, there can be many different strains. In this lesson we will discuss the common pathogenic strains of E. coli.
5. Escherichia Coli Infections: E. coli O157:H7
E. coli O157:H7 is one of the most infamous causes of foodborne illness. In this lesson, we will discuss how E. coli O157:H7 causes disease in the human host.
6. E. coli O157:H7 - Diagnosis, Treatment & Prevention
E. coli O157:H7 is one of the most infamous causes of foodborne illness. In this lesson, we will discuss the diagnosis, treatment, and prevention of E. coli O157:H7.
7. Typhoid Fever: Symptoms, Causes and Salmonella Typhi
Have you ever heard of the infamous Typhoid Mary, a cook responsible for spreading disease to over a thousand unlucky diners? In this lesson, we will learn about typhoid fever and the causative organism Salmonella enterica serovar Typhi.
8. Food Poisoning from Clostridium perfringens & Clostridium Perfringens Enterotoxin
Clostridium perfringens is a common soil bacteria that causes a mild case of food poisoning. In this lesson, we will look at one particularly severe outbreak and the factors leading to the higher-than-normal number of deaths that occurred.
9. What Is Cholera? - Disease Symptoms and Vibrio Cholerae
Throughout history, outbreaks of cholera have devastated populations all over the world. In this first of two lessons, we will begin our investigation of cholera by looking at the bacterial species that causes the disease: Vibrio cholerae.
10. Cholera: Causes, Treatment and Prevention
Cholera is a deadly disease characterized by profuse, watery diarrhea. In this second lesson dedicated to cholera, we will examine the treatment and prevention of the disease.
11. What Is an Ulcer: Causes, Symptoms and Helicobacter pylori
Once thought to be caused by a stressful life and spicy foods, stomach ulcers have been causing severe pain in people for years. In this lesson, we will look at the bacteria Helicobacter pylori, now confirmed to be the real cause of most stomach ulcers.
12. Brucellosis: Infectious Disease Caused by the Brucella Bacteria
In this lesson we will learn about the bacterial pathogen Brucella. Brucella is a human and livestock pathogen that was also the first biological agent weaponized by the United States.
13. Dysentery and the Bacteria Shigella: Symptoms & Causes
You can catch all sorts of diseases from fecal-oral contamination. Shigella is a human fecal bacteria that can cause a potentially fatal dysentery by consuming as few as 10 cells, an amount far too small to ever notice.
14. Food Poisoning from Staphylococcus Aureus Bacteria
Staphylococcus aureus is a deadly bacteria often associated with life-threatening infections. Did you know that S. aureus can also cause food poisoning? In this lesson, we'll explore this often overlooked foodborne illness.
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Other chapters within the UExcel Microbiology: Study Guide & Test Prep course
- Early History of Microbiology
- Fundamentals of Microbiology
- Microbiology Laboratory Procedures
- Understanding Genetics & DNA
- Understanding Metabolism
- Bacterial Biology
- Understanding Diseases
- Protozoan Diseases
- Understanding Viruses
- Overview of DNA Viruses
- Overview of RNA Viruses
- Overview of Fungal Infections
- Overview of Bacterial STDs
- Understanding Blood-Borne Bacterial Diseases
- Respiratory Bacterial Infections
- Bacterial Skin and Wound Infections
- Immunology Basics
- Structure & Function of the Immune System
- Overview of Antigens
- Disorders of the Immune System
- Serological & Diagnostic Reactions
- Antimicrobial Drugs Overview
- Sterilization & Antiseptic Methods
- Chemical Methods of Microbial Control
- Effectiveness of Antiseptics & Disinfectants
- Microbiology & the Environment
- Food & Industrial Microbiology Overview
- UExcel Microbiology Flashcards