Textbook Question
True or False: Giardia infections in the United States are all imported from other countries.
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Ch. 19 - Digestive System Infections
Norman-McKay2nd EditionMicrobiology: Basic and Clinical PrinciplesISBN: 9780137661619
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Table of contents
- Ch. 1 - Introduction to Microbiology22
- Ch. 2 - Biochemistry Basics19
- Ch. 3 - Introduction to Prokaryotic Cells17
- Ch. 4 - Introduction to Eukaryotic Cells16
- Ch. 5 - Genetics25
- Ch. 6 - Viruses and Prions12
- Ch. 7 - Fundamentals of Microbial Growth20
- Ch. 8 - Microbial Metabolism16
- Ch. 9 - Principles of Infectious Disease and Epidemiology11
- Ch. 10 - Host Microbe Interactions and Pathogenesis19
- Ch. 11 - Innate Immunity24
- Ch. 12 - Adaptive Immunity22
- Ch. 13 - Immune System Disorders15
- Ch. 14 - Biomedical Applications: Vaccines, Diagnostics, Therapeutics, and Molecular Method14
- Ch. 15 - Antimicrobial Drugs18
- Ch. 16 - Respiratory System Infections16
- Ch. 17 - Skin and Eye Infections19
- Ch. 18 - Nervous System Infections12
- Ch. 19 - Digestive System Infections20
- Ch. 20 - Urinary and Reproductive System Infections10
- Ch. 21 - Cardiovascular and Lymphatic Infections15
Norman-McKay2nd EditionMicrobiology: Basic and Clinical PrinciplesISBN: 9780137661619Not the one you use?Change textbook
Chapter 19, Problem 16
List the symptoms associated with the various stages of Schistosomiasis.
Verified step by step guidance1
Understand that Schistosomiasis is a parasitic disease caused by blood flukes of the genus Schistosoma, and its symptoms vary depending on the stage of infection.
Identify the initial stage called the 'Acute' or 'Katayama fever' stage, which occurs weeks after infection and is characterized by symptoms such as fever, chills, cough, muscle aches, and rash due to the body's immune response to migrating larvae.
Recognize the 'Chronic' stage, which develops months to years after infection, where symptoms depend on the species and the organs affected; common symptoms include abdominal pain, diarrhea, blood in stool or urine, and liver or spleen enlargement due to egg-induced inflammation.
Note that in severe chronic cases, complications such as bladder fibrosis, portal hypertension, or neurological symptoms can occur, reflecting the damage caused by trapped eggs in tissues.
Summarize the symptoms by associating them clearly with each stage: acute symptoms from immune reaction to larvae, and chronic symptoms from egg deposition and tissue damage.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Life Cycle of Schistosoma
Understanding the life cycle of Schistosoma parasites is essential, as it explains how infection occurs through contact with contaminated water, the development of larvae in the human host, and the progression through different stages that cause distinct symptoms.
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Stages of Schistosomiasis Infection
Schistosomiasis progresses through acute, chronic, and sometimes advanced stages, each with characteristic symptoms such as rash and fever in the early phase, and organ-specific damage like liver fibrosis or bladder issues in later stages.
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Host Immune Response and Pathology
Symptoms arise largely from the host's immune reaction to Schistosoma eggs trapped in tissues, causing inflammation and granuloma formation, which leads to the clinical manifestations seen in different organs depending on the species involved.
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Related Practice
Textbook Question
Using the following list, construct a concept map or a chart connecting these terms according to the pathogen and correlated disease: fecal–oral, diarrhea, rotavirus, Campylobacter jejuni, bacterial, viral, foodborne transmission, antibiotics, vaccine.
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Textbook Question
What animals generally serve as the source of Escherichia coli O157:H7 for human infection?
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Textbook Question
Larry goes to his local Red Cross center to donate blood for the first time. A few weeks later a Red Cross agent contacts him to ask him to come in for a confidential meeting. During the meeting, Larry learns that his blood tested positive for hepatitis. He claims to be in excellent health and doesn’t believe the diagnosis. What virus does Larry most likely have? (NCLEX/HESI/TEAS)
a. Hepatitis A
b. Hepatitis B
c. Hepatitis C
d. Hepatitis D
e. Hepatitis E
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Textbook Question
A lower endoscopy examination of a patient complaining of abdominal cramps and diarrhea reveals pus-laden patches along the intestinal wall. Which of the following infectious agents could be considered the pathogen responsible for this condition?
a. Clostridioides difficile
b. Shigella
c. Salmonella serotype Typhi
d. Helicobacter pylori
e. Campylobacter jejuni
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Textbook Question
A father suspects his son has intestinal worms due to his complaint of an itchy bottom. What habit is most likely responsible for his infection?
a. Walking outside barefoot
b. Eating without first washing hands
c. Eating fruit that is not washed
d. Eating undercooked meat
e. Swimming in a nearby freshwater lake
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