Chapter 8 environmental health & Toxicology

Chapter 8 environmental health & Toxicology -...

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CHAPTER 8  ENVIRONMENTAL HEALTH  BIOL 104 SPRING 2008 WINONA STATE UNIVERSITY
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CASE STUDY 8—THE NEXT PANDEMIC Pandemic—widespread,  deadly epidemic Generally worldwide Worst on record—Flu of 1918 Estimated 50-100 million deaths Experts agree that it is only a  matter of time b4 next one Bird Flu is most likely candidate Identified in 1997 (Hong  Kong), spread to 50 countries Highly contagious  wild bird pop’n in Asia & Eur
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CASE STUDY 8—THE NEXT PANDEMIC In 1 st  2 years of  discovery 150 million  domesticated fowl  culled or died to  prevent spread Has spread to humans  (at this time very  minimally) Of the 175 people who  contracted disease 105  died
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CASE STUDY 8—THE NEXT PANDEMIC If pandemic were to  start it is estimated 150  million deaths Close cohabitation Large populations of  people, and livestock  provide ideal conditions  for viruses to mutate  (making them more  virulent) Global travel means fast  dispersal
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ENVIRONMENTAL HEALTH Definitions Health—state of complete  physical, mental and social  well being Disease—abnormal change  in the bodies condition that  impairs important physical  or psychological function Diet, nutrition, infectous  agents, toxic substances,  genetics, trauma, and stress  play roles in morbidity  (illness) and mortality  (death)
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Chapter 8 environmental health & Toxicology -...

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