1. Human demographics.
– Cities versus country living.
– Sexual and other risk behavior.
2. Technology and industry.
– General improvement in public health
– Nocosomial diseases
– Transportation, central distribution
- 3. Economic development and
- land use.
– Rift Valley disease in Egypt.
- 4. International travel and
– West Nile virus, Marburg (Ebola) virus
- 5. Microbial adaptation and
– RNA viruses: SARS, influenza and HIV virus.
- 6. Breakdown of public
- health measures.
– Cryptosporidium outbreak in Wisconsin
– Diphtheria in the Soviet Union
- 7. Abnormal natural
- occurrences that upset the usual host-pathogen balance.
– Hantavirus and mice