Biological Hazards: Diseases

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Presentation transcript:

Biological Hazards: Diseases Nontransmissible disease Fig. 19-13 p. 425 Transmissible disease Pathogens Vectors Tuberculosis HIV/AIDS Malaria

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)

Transmittable and Nontransmittable Diseases According to WHO: 30% of deaths are nontransmissible, 26% are transmissible, and 12% are nontransmissible cancers.

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.

TB Kills 1.7 million people per year.

Reducing Infectious Diseases Fig. 19-15 p. 426

Bioterrorism Possible targets: air, water, and food Inexpensive Fairly easy to produce biological agents Recombinant DNA techniques Refer to Fig. 19-16 p. 427

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