Prescott's Microbiology
10th Edition
ISBN: 9781259281594
Author: Joanne Willey, Linda Sherwood Adjunt Professor Lecturer, Christopher J. Woolverton Professor
Publisher: McGraw-Hill Education
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Chapter 37, Problem 4CHI
How can changes in herd immunity contribute to an outbreak of a disease on an island?
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Herd immunity protects un-immunized
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B) O False
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Chapter 37 Solutions
Prescott's Microbiology
Ch. 37.2 - How might biased data collection impact the public...Ch. 37.2 - Prob. 1RIACh. 37.2 - Prob. 2RIACh. 37.2 - Prob. 3RIACh. 37.2 - Prob. 4RIACh. 37.2 - Prob. 5RIACh. 37.3 - Prob. 1MICh. 37.3 - Prob. 2MICh. 37.3 - Prob. 1RIACh. 37.3 - Prob. 2RIA
Ch. 37.3 - Prob. 3RIACh. 37.3 - Prob. 4RIACh. 37.4 - Prob. 1RIACh. 37.4 - What are some of the factors in your community...Ch. 37.4 - Prob. 3RIACh. 37.5 - Describe a health-careassociated infection, and...Ch. 37.5 - Prob. 2RIACh. 37.5 - Prob. 3RIACh. 37.7 - Prob. 1RIACh. 37.7 - Prob. 2RIACh. 37.7 - Prob. 3RIACh. 37.7 - What is the Public Health Security and...Ch. 37 - Why is international cooperation a necessity in...Ch. 37 - What common sources of infectious disease are...Ch. 37 - Prob. 3CHICh. 37 - How can changes in herd immunity contribute to an...Ch. 37 - College dormitories are notorious for outbreaks of...Ch. 37 - Prob. 6CHICh. 37 - Prob. 7CHICh. 37 - Prob. 8CHI
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- Which of the following statements is false?a) A disease with a long incubation period might spread extensively before an epidemic is recognized.b) A person exposed to a low dose of a pathogen might not develop disease.c) The young and the aged are more likely to develop certain diseases.d) Malnourished populations are more likely to develop certain diseases.e) Herd immunity occurs when a population does not engage in a given behavior, such as eating raw fish, that would otherwise increase their risk of disease.arrow_forwardHow can vaccinated children increase herd immunity?arrow_forwardWhy is it helpful for scientists to use models to simulate the spread of a communicable disease?arrow_forward
- How does herd immunity prevent a nonimmune individual fromacquiring a disease? Give an example.arrow_forwardHerd immunity refers to everyone in a community becoming vaccinated to protect everyone against a particular disease. A) O True B) O Falsearrow_forwardIs the species-specificity rule of parasitism ever broken?arrow_forward
- Why is virulence expected to increase with vector or water-borne transmission, relative to direct transmission? Using the concept of a “cost of virulence”, explain how vertical transmission or transmission in a hospital is thought to affect the level of virulence favored by natural selection?arrow_forwardWhich of the following best explains why vaccination of humans against rabies can be delayed until after exposure to a potential source of infection? A) Antibody responses are more rapid than those against other viruses B) T lymphocyte responses are more rapid than those against other viruses C) The virus does not infect any cells for several weeks or months D) The virus does not reach i target organ for several weeks or monthsarrow_forwardWhich statistic below is the best example of incidence of a disease? A) In 2005, 2 million people died from HIV B) A total of 40 million people have died from HIV infection C) In 2005, 4 million people acquired HIV D) A total of 65 million people have gotten HIV E) 25 million people currently suffer from HIV infectionarrow_forward
- Describe the medical guidelines for vaccination, its side effects,and how it relates to herd immunity.arrow_forwardDiscuss the various conditions that must be met for herd immunity to existarrow_forwardThe measles virus has a basic reproduction number (R0) of 15. To achieve herd immunity, what percentage of the population needs to be vaccinated? 90% 96% 94% 99%arrow_forward
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