Suppose that some members of a population are infected with a sexually transmitted virus that causes disease X, and some are infected with another sexually transmitted virus that causes disease Y. Some members of the population may be infected with both viruses. While diseases X and Y are similar in that they are both sexually trans- mitted diseases, the disease X is much more harmful to its carriers than the disease Y is to its carriers. Condom use is highly effective in preventing the transmission of either disease. Suppose scientists discover a cure for the sexually transmitted disease X. This cure (a vaccination) will eliminate the virus causing the disease X from its carrier before its carrier can suffer any harm from the virus. Everybody is immediately given this vaccination against the disease X. a What do you expect to happen to the prevalence of the virus causing the dis- ease X in the population? Draw a graph with time on the horizontal axis and prevalence of the virus causing disease X on the vertical axis. b What do you expect to happen to the rate of condom use in the population over time? Add a curve for the rate of condom use to your graph. c What do you expect to happen to the prevalence of the virus causing the disease Y in the population? Add a curve for the prevalence of disease Y to your graph. (Question courtesy of Professor Mikko Packalen, University of Waterloo)
Suppose that some members of a population are infected with a sexually transmitted virus that causes disease X, and some are infected with another sexually transmitted virus that causes disease Y. Some members of the population may be infected with both viruses. While diseases X and Y are similar in that they are both sexually trans- mitted diseases, the disease X is much more harmful to its carriers than the disease Y is to its carriers. Condom use is highly effective in preventing the transmission of either disease. Suppose scientists discover a cure for the sexually transmitted disease X. This cure (a vaccination) will eliminate the virus causing the disease X from its carrier before its carrier can suffer any harm from the virus. Everybody is immediately given this vaccination against the disease X. a What do you expect to happen to the prevalence of the virus causing the dis- ease X in the population? Draw a graph with time on the horizontal axis and prevalence of the virus causing disease X on the vertical axis. b What do you expect to happen to the rate of condom use in the population over time? Add a curve for the rate of condom use to your graph. c What do you expect to happen to the prevalence of the virus causing the disease Y in the population? Add a curve for the prevalence of disease Y to your graph. (Question courtesy of Professor Mikko Packalen, University of Waterloo)
Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter21: Viruses
Section: Chapter Questions
Problem 16RQ: An apple grower notices that several of his apple trees with fungi growing on their trunks have...
Related questions
Question
Transcribed Image Text:17 Suppose that some members of a population are infected with a sexually transmitted
virus that causes disease X, and some are infected with another sexually transmitted
virus that causes disease Y. Some members of the population may be infected with
both viruses. While diseases X and Y are similar in that they are both sexually trans-
mitted diseases, the disease X is much more harmful to its carriers than the disease
Y is to its carriers. Condom use is highly effective in preventing the transmission of
either discase. Suppose scientists discover a cure for the sexually transmitted disease
X. This cure (a vaccination) will eliminate the virus causing the disease X from its
carrier before its carrier can suffer any harm from the virus. Everybody is immediately
given this vaccination against the disease X.
a What do you expect to happen to the prevalence of the virus causing the dis-
ease X in the population? Draw a graph with time on the horizontal axis and
prevalence of the virus causing disease X on the vertical axis.
b What do you expect to happen to the rate of condom use in the population over
time? Add a curve for the rate of condom use to your graph.
c What do you expect to happen to the prevalence of the virus causing the disease
Y in the population? Add a curve for the prevalence of disease Y to your graph.
(Question courte sy of Professor Mikko Packalen, University of Waterloo)
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 1 images
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.Recommended textbooks for you
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:
9781305389892
Author:
Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:
Cengage Learning
Biology: The Unity and Diversity of Life (MindTap…
Biology
ISBN:
9781337408332
Author:
Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:
Cengage Learning
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:
9781305389892
Author:
Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:
Cengage Learning
Biology: The Unity and Diversity of Life (MindTap…
Biology
ISBN:
9781337408332
Author:
Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:
Cengage Learning
Anatomy & Physiology
Biology
ISBN:
9781938168130
Author:
Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher:
OpenStax College
Biology: The Unity and Diversity of Life (MindTap…
Biology
ISBN:
9781305073951
Author:
Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:
Cengage Learning
Biology Today and Tomorrow without Physiology (Mi…
Biology
ISBN:
9781305117396
Author:
Cecie Starr, Christine Evers, Lisa Starr
Publisher:
Cengage Learning