Textbook Question
Mycobacterium avium-intracellulare was considered relatively harmless until the late 20th century, when it became common in certain infections. Explain how this bacterium’s pathogenicity changed.
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Ch. 19 - Pathogenic Gram-Positive Bacteria
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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Table of contents
- Ch. 1 - A Brief History of Microbiology31
- Ch. 2 - The Chemistry of Microbiology28
- Ch. 3 - Cell Structure and Function39
- Ch. 4 - Microscopy, Staining, and Classification25
- Ch. 5 - Microbial Metabolism51
- Ch. 6 - Microbial Nutrition and Growth37
- Ch. 7 - Microbial Genetics51
- Ch. 8 - Recombinant DNA Technology21
- Ch. 9 - Controlling Microbial Growth in the Environment36
- Ch. 10 - Controlling Microbial Growth in the Body: Antimicrobial Drugs21
- Ch. 11 - Characterizing and Classifying Prokaryotes29
- Ch. 12 - Characterizing and Classifying Eukaryotes34
- Ch. 13 - Characterizing and Classifying Viruses, Viroids, and Prions23
- Ch. 14 - Infection, Infectious Diseases, and Epidemiology35
- Ch. 15 - Innate Immunity34
- Ch. 16 - Adaptive Immunity21
- Ch. 17 - Immunization and Immune Testing29
- Ch. 18 - Immune Disorders22
- Ch. 19 - Pathogenic Gram-Positive Bacteria25
- Ch. 20 - Pathogenic Gram-Negative Cocci and Bacilli28
- Ch. 21 - Rickettsias, Chlamydias, Spirochetes, and Vibrios25
- Ch. 22 - Pathogenic Fungi47
- Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors44
- Ch. 24 - Pathogenic DNA Viruses23
- Ch. 25 - Pathogenic RNA Viruses30
- Ch. 26 - Applied and Industrial Microbiology29
- Ch. 27 - Microbial Ecology and Microbiomes22
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302Not the one you use?Change textbook
Chapter 19, Problem 3
Which of the following conditions is a systemic disease caused by Staphylococcus?
a. Impetigo
b. Folliculitis
c. Carbuncle
d. Toxic shock syndrome
Verified step by step guidance1
Step 1: Understand the difference between localized and systemic infections. Localized infections affect a specific area of the body, while systemic infections spread throughout the body, affecting multiple organs or systems.
Step 2: Review each condition caused by Staphylococcus: impetigo, folliculitis, and carbuncle are primarily localized skin infections, meaning they affect specific areas of the skin.
Step 3: Recognize that toxic shock syndrome (TSS) is a systemic condition caused by toxins produced by Staphylococcus aureus, which can enter the bloodstream and affect multiple organs.
Step 4: Identify that among the options, toxic shock syndrome is the systemic disease because it involves widespread effects beyond the initial site of infection.
Step 5: Conclude that the correct answer is the condition that represents a systemic disease caused by Staphylococcus, which is toxic shock syndrome.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Staphylococcus Infections
Staphylococcus is a genus of bacteria commonly found on the skin and mucous membranes. It can cause a range of infections from mild skin conditions to severe systemic diseases. Understanding the types of infections caused by Staphylococcus helps differentiate localized from systemic conditions.
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Map of Lesson on Bacteriophage Infections
Localized vs. Systemic Infections
Localized infections affect a specific area of the body, such as the skin or hair follicles, while systemic infections spread throughout the body, affecting multiple organs or systems. Recognizing this distinction is crucial for identifying diseases like toxic shock syndrome, which is systemic.
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Toxic Shock Syndrome (TSS)
TSS is a severe systemic illness caused by toxin-producing strains of Staphylococcus aureus. It involves sudden fever, rash, low blood pressure, and multi-organ involvement. Unlike skin infections like impetigo or folliculitis, TSS affects the entire body and requires urgent medical attention.
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Related Practice
Textbook Question
How does Staphylococcus aureus affect the matrix between cells in the human body?
a. S. aureus triggers blood clotting, which coats the matrix and inhibits cellular
communication.
b. S. aureus produces an enzyme that dissolves hyaluronic acid and thus enables it to pass between the cells.
c. S. aureus possesses a hyaluronic acid capsule that causes leukocytes to ignore the bacterium as if it were camouflaged.
d. S. aureus does not affect the matrix but instead produces a necrotizing agent that dissolves body cells.
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Textbook Question
A bacterium associated with bacteremia, meningitis, and pneumonia in newborns is
a. Staphylococcus aureus
b. Staphylococcus epidermidis
c. Streptococcus pyogenes
d. Streptococcus agalactiae
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Textbook Question
Label acetylcholine. Color the sites of action of botulism toxin on a nerve cell.
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Textbook Question
Explain how mice are used in the diagnosis of botulism poisoning.
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Textbook Question
Contrast tuberculoid leprosy with lepromatous leprosy in terms of pathogenesis. How does the cellular immune response of a patient affect the form of the disease?
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