MasteringMicrobiology with Pearson Etext - Valuepack Access Card - for Microbiology with Diseases by Body System
4th Edition
ISBN: 9780321943705
Author: BAUMAN
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 21, Problem 2CT
An epidemiologist notices a statistical difference in the fatality rates between cases or Gram-positive bacteremia treated with antimicrobial drugs and treated cases of Gram-negative bacteremia–that is, patients with Gram-positive bacteremia are much more likely to respond to treatment and survive. Explain one reason why this might be so.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Resistance to antimicrobial agents is more commonly seen in hospital-acquired infections with enteric bacteria than in community-based infections with the same species. Explain why this is so.
Based on disease syndromes and characteristics, and also on their effect on certain cell
cultures and serological groupings, five virulence groups of Escherichia coli are
recognized. Briefly distinguish between these virulence groups. [Base your answer on
virulence factors, pattern of bacterial attachment to host cells, effects of attachment to
host cells, production of toxins, and invasiveness]
What will the appearance of Escherichia coli be on MacConkey Agar red and Eosin
Methylene Blue (EMB) agar, respectively.
Different strains of Streptococcus pyogenes have different virulence factors, giving these microbes much versatility. Virulence factors include which of the following? Choose one or more:
A.A capsule that, when thick, will help the organism avoid phagocytosis by macrophages
B.A cell wall containing lipoteichoic acid, thought to facilitate adherence to pharyngeal epithelial cells
C.Enzymes that lyse blood cells (streptolysins)
D.The production of several endotoxins called streptococcal pyogenic endotoxins (SPEs)
Chapter 21 Solutions
MasteringMicrobiology with Pearson Etext - Valuepack Access Card - for Microbiology with Diseases by Body System
Ch. 21 - Bacteria infecting the mouth can enter the blood...Ch. 21 - Prob. 1CCSCh. 21 - Nightmare on the Island Peggy loves her time on...Ch. 21 - Prob. 2TMWCh. 21 - Prob. 3CCSCh. 21 - Prob. 4CCSCh. 21 - Prob. 3TMWCh. 21 - Why can people who avoid cats get infected by...Ch. 21 - Prob. 5CCSCh. 21 - Prob. 1EDCS
Ch. 21 - Prob. 1MCCh. 21 - Prob. 2MCCh. 21 - Prob. 3MCCh. 21 - Prob. 4MCCh. 21 - Prob. 5MCCh. 21 - Prob. 6MCCh. 21 - Prob. 7MCCh. 21 - How is septicemia introduced into the body? a....Ch. 21 - Prob. 9MCCh. 21 - Prob. 10MCCh. 21 - A cardiologist examines a patient with history of...Ch. 21 - Prob. 12MCCh. 21 - Prob. 13MCCh. 21 - Which is spread from person to person? a....Ch. 21 - Which of the following statements is false? a. A...Ch. 21 - Prob. 16MCCh. 21 - Prob. 17MCCh. 21 - Prob. 18MCCh. 21 - Prob. 19MCCh. 21 - Prob. 20MCCh. 21 - Prob. 21MCCh. 21 - Prob. 22MCCh. 21 - Prob. 23MCCh. 21 - Prob. 24MCCh. 21 - Prob. 25MCCh. 21 - Prob. 1MCh. 21 - Prob. 2MCh. 21 - Prob. 1FIBCh. 21 - Prob. 2FIBCh. 21 - Prob. 3FIBCh. 21 - Prob. 4FIBCh. 21 - Prob. 5FIBCh. 21 - The three parts of the life cycle of Plasmodium...Ch. 21 - Prob. 7FIBCh. 21 - Prob. 8FIBCh. 21 - Prob. 9FIBCh. 21 - Prob. 10FIBCh. 21 - On the figure of the life cycle of Plasmodium,...Ch. 21 - Prob. 2VICh. 21 - List the three layers of the heart in order from...Ch. 21 - Prob. 2SACh. 21 - Prob. 3SACh. 21 - Prob. 4SACh. 21 - Define occult septicemia.Ch. 21 - Prob. 6SACh. 21 - Prob. 7SACh. 21 - Prob. 8SACh. 21 - Prob. 9SACh. 21 - If 13 million people die annually from malaria,...Ch. 21 - Prob. 11SACh. 21 - Prob. 12SACh. 21 - Prob. 13SACh. 21 - Why do geneticists say there is a single species...Ch. 21 - Explain why poor hygiene actually protects against...Ch. 21 - A blood bank refused to accept blood from a...Ch. 21 - An epidemiologist notices a statistical difference...Ch. 21 - Prob. 3CTCh. 21 - Compare and contrast the life cycles of...Ch. 21 - Explain how each of the following could lead to...Ch. 21 - Discuss why sickle-cell trait is advantageous to...Ch. 21 - Prob. 7CTCh. 21 - Prob. 8CTCh. 21 - Prob. 9CTCh. 21 - Most cases of tularemia in the United States occur...Ch. 21 - Prob. 11CTCh. 21 - Suppose scientists developed a vaccine for dengue...Ch. 21 - Prob. 13CTCh. 21 - Prob. 14CTCh. 21 - Prob. 1CM
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In light of the current pandemic, give one strategy that scientists have developed to discover new antimicrobial agents. explain the strategy, the benefits and the current development of this strategy.arrow_forwardDiscuss the following virulence factors: collagenase, hemolysin, siderophore. For each, explain the molecules involved, the pathogen-host interaction, and name a species and disease associated with each factor.arrow_forward1.) Why is boiling water not a recommended sterilization method? 2.) List examples of transfusion-transmitted infections. How are these infections prevented?arrow_forward
- Which of the following pathogens is the LEAST virulent? 1. Microbe B, ID50 = 1,000 cells 2. Microbe D, ID50 = 10 cells 3. None of the other four answers (Cannot be determined from information provided) 4. Microbe C, ID50 = 100 cells 5. Microbe A, ID50 = 100,000 cellsarrow_forwardPropionibacterium acnes is a normal member of the skin microbiome that benefits the body by lowering the skin's pH- an antimicrobial effect. However, P. acnes is also the leading cause of acne. Explain mechanistically how can a bacterium be normal and beneficial but also be pathogenic?arrow_forwardBelow are a list of virulence factors/ strategies paired with an example of an organism that utilizes them. How do each of the following strategies contribute to the virulence of the pathogen? Strategy - Causes the host to produce more receptors (Organism - Rhinovirus) Strategy - Produces gas as a product of fermentation (Organism - Clostridium perfringens) Strategy - Produces a capsule (organism - Klebsiella pneumonia) Strategy - Ability to move between adjacent cells (organism - Cytomegalovirus) Strategy - Ability to use pilus as a motility structure (organism - Pseudomonas aerogenosa)arrow_forward
- Using the Koch's Postulates, support the findings that Mycobacterium tuberculosis is the causative agent of tuberculosis. Specifically, you have to provide brief narratives/pictures/proofs and sources that support the postulate listed below: The organism must be isolated from the newly infected animals and cultured again in the laboratory, after which it should be seen to be the same as the original organism.arrow_forwardIn the hospital setting, how effective is handwashing compared to hand sanitizer at controlling the spread of COVIVD-19 during the pandemic?arrow_forwardWrite the most likely causative microorganism and disease of the following cases and explain sign, symptoms and control measures. Your patient is a 20-year-old woman with the sudden onset of fever to 40 0C and a severe headache. Physical examination reveals nuchal rigidity. You suspect meningitis and do a spinal tap. Gram stain of the spinal fluid reveals many neutrophils and many gram-negative diplococci. A 25-year-old woman with itching, burning at vulva and abnormal white vaginal discharge. Yeasts was observed by microscopic examination of vaginal secretions. Meningitidis developed in the newborn baby within 5 days after birth. While the mother of baby was pregnant, she was consuming unpasteurized milk products . A male patient has a wound infection with blue-greenish colored pus and special smell. This bacteria is gram negative, rod shaped and non- fermentative. A 70-year-old woman presented after 3 days of enduring painful blisters only on the right side of her…arrow_forward
- The parents of a 3-day-old male neonate are concerned by their child's condition. The child is irritable, has fever and blisters over most of his body, and peeling skin as seen in the attached image. Which of the following virulence factors produced by the most likely causal agent is responsible for this condition? Answers A - E A Alpha-Toxin B Beta hemolysin C Exfoliative toxin D Pyrogenic exotoxin E Toxic shock syndrome toxin O Question #6 attachment O .0arrow_forwardWhich of the following is NOT true of bacterial exotoxins? 1. Important in the pathogenesis of many human diseases 2. Their toxic effect can be systemic, affecting cells distant from the primary site of infection 3. None of the other four answers (All are true of bacterial exotoxins) 4. Different exotoxins may affect different types of cells (e.g., nerves, gastrointestinal mucosa) 5. Some exotoxins have two components, A (active) and B (binding)arrow_forwardA 65-year-old woman has a long-term central venous catheter for intravenous therapy. She develops fever and subsequently has multiple blood cultures positive for Staphylococcus epidermidis. All of the S. epidermidis isolates have the same colony morphology and antimicrobial susceptibility pattern, suggesting that they are the same strain. In what possible way do you think she has contracted the bacteria? Which link in the chain of infection has broken in this particular scenario and what will be your advice to avoid such infections?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Microbiology for Surgical Technologists (MindTap ...BiologyISBN:9781111306663Author:Margaret Rodriguez, Paul PricePublisher:Cengage Learning
Microbiology for Surgical Technologists (MindTap ...
Biology
ISBN:9781111306663
Author:Margaret Rodriguez, Paul Price
Publisher:Cengage Learning
Infection Prevention and Control; Author: thecityoftoronto;https://www.youtube.com/watch?v=jx9sRYmBW3Q;License: Standard Youtube License