Microbiology: An Evolving Science (Fourth Edition)
Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 28.3, Problem 2TQ
Summary Introduction

To review:

The reasons behind easy transmission of certain diseases in comparison to others.

Introduction:

The diseases which can be spread or transmitted easily are called infectious diseases. They are caused by organisms such as bacteria, fungi, viruses or parasites. The transmission of infectious diseases is done in two ways namely, direct transmission and indirect transmission. Direct transmission is when the disease spreads by direct contact with the infected person or animal.

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What is the main reason that infectious diseases are becoming more common in modern times?  A. Global population decrease which brings humans farther away from wild animals and their environments.   B. Global population increase which brings humans closer to wild animals and their environments.   C. Global population decrease which brings humans closer to wild animals and their environments.   D. Global population increase which brings humans farther from wild animals and their environments.
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Does an insect disease vector like a mosquito have to intake blood to transmit a pathogen to a host? Can one individual mosquito infect several hosts? Can one mosquito species transmit more than one disease and how is it affected by pathogens?
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