AP Environmental Science / Unit 8: Aquatic and Terrestrial Pollution
8.15 Pathogens and Infectious Diseases
Notes
Pathogens (bacteria, viruses, parasites) spread through water, food, air and vectors (mosquitoes).
- Climate change can expand vector ranges (malaria, West Nile, Zika).
- Poor sanitation spreads cholera; crowding spreads tuberculosis.
Practice
Malaria is spread by:
A parasite carried by a vector.
Cholera spreads mainly through:
Poor sanitation.
Warming temperatures can spread diseases by:
Vectors move to new areas.
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