MICROBIOLOGY: EVOLV.SCI.-W/ACCESS>CI<
MICROBIOLOGY: EVOLV.SCI.-W/ACCESS>CI<
4th Edition
ISBN: 9780393622805
Author: SLONCZEWSKI
Publisher: Norton custom
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Chapter 25.1, Problem 1TQ
Summary Introduction

To review:

Virulence of a microbe with LD50 (lethal dose 50%) with 5 Ă— 104 and another microbe of LD50 with 5 Ă— 107.

Introduction:

Virulence is a parameter by which the severity or degree of a disease is measured. The fatality rates of different microbes define the virulence of the pathogen. For example, Ebola and Marburg virus have fatality rates of 70% and hence, are highly virulent. Lethal dose 50% is used to measure the virulence of a microbe such as a virus or bacteria. It is the number of microbes needed for killing 50% of the experimental group of animal hosts.

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