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Biological Hazards: Diseases
Nontransmissible disease Fig p. 425 Transmissible disease Pathogens Vectors Tuberculosis HIV/AIDS Malaria
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Transmittable and Nontransmittable Diseases
Nontransmissible: caused by something other than a living organism and does not spread from person to person. (cancer, diabetes, etc.) Transmissible: caused by living organisms and can spread from person to person. (bacteria, virus, parasite)
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Transmittable and Nontransmittable Diseases
According to WHO: 30% of deaths are nontransmissible, 26% are transmissible, and 12% are nontransmissible cancers.
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Transmittable and Nontransmittable Diseases
Good News: Since 1950, transmissible disease death rates fallen dramatically. Bad News: Bacteria resistance growing and insects becoming immune to pesticides.
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TB Kills 1.7 million people per year.
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Reducing Infectious Diseases
Fig p. 426
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Bioterrorism Possible targets: air, water, and food Inexpensive
Fairly easy to produce biological agents Recombinant DNA techniques Refer to Fig p. 427
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