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Notes: Week of 8/29

by: Grace Notetaker

Notes: Week of 8/29 HTH 245

Grace Notetaker
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About this Document

Discusses Chapter 1 of The Microbial Challenge
Foundations of Infectious Disease
Dayna Henry
Class Notes
Microbes, population, Urbanization




Popular in Foundations of Infectious Disease

Popular in Health Sciences

This 2 page Class Notes was uploaded by Grace Notetaker on Friday September 2, 2016. The Class Notes belongs to HTH 245 at James Madison University taught by Dayna Henry in Fall 2016. Since its upload, it has received 24 views. For similar materials see Foundations of Infectious Disease in Health Sciences at James Madison University.


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Date Created: 09/02/16
 Reading Notes Chapter 1 o 5 kinds of microbes:  bacteria  viruses  protozoans  fungi  unicellular fungi o also – prions  however, unlike microbes, prions are made completely of protein and have no DNA/RNA o remember – most microbes are beneficial  pathogens = virulent microbes, disease producers o Factors Responsible for Emerging Infections  World population growth  Population doubled in the past 40 years (current population is about 7 billion)  Population density is more important than the whole number o 80% of population is in undeveloped countries o biological vectors can move microbes from person to person (i.e. mosquitoes) o zoonotic disease = disease moving from animal to human  age density o older = more susceptible to disease o retirement homes = closer living, increases population density  Urbanization  Poorer populations move to cities for better opportunities and jobs o Increases population density  Ecological disturbances  Deforestation o Forests hold biological vectors and other animals and deforestation causes them to migrate and put humans closer to them  Climactic changes o i.e. mosquitoes prefer more humid climates  natural disasters o i.e. Hurricane Katrina  Technological advances  Jet travel – incubates diseases, also bugs can sneak back in bags  Use of whole blood and blood products – transfer of diseases  Microbial evolution and adaptation  Antibiotic resistance because of overuse and misuse by patients (clinically and in agriculture)  Human behavior  Complacency o “it can’t happen to me” o anti-vaccine movement  migration o IDP = internally-displaced person o Refugees o Bring new diseases to new places  Society  Additional Class Notes – week of 8/29/16 o 1970’s = era of false hope  polio vaccine invented  smallpox eradicated o diffusion of innovation  an innovation takes time to spread across the world  however, vaccines don’t work unless everyone is getting them o infectious diseases are still among the leading causes of death worldwide  infectious diseases are more common among poor population  behavioral diseases are more common among rich


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