Factors stimulating new epidemics

Factors that have been described by to stimulate the rise of new epidemics include:

1.Alterations in agricultural practices and land use
2.Changes in society and human demographics
3.Poor population health (e.g., malnutrition, high prevalence of HIV)
4.Hospitals and medical procedures
5.Evolution of the pathogen (e.g., increased virulence, drug resistance)
6.Contamination of water supplies and food sources
7.International travel
8.Failure of public health programs
9.International trade
10.Climate change

Several other factors have also been mentioned in different reports.These include :

1.Reduced levels of biodiversity (e.g. through environmental destruction)
2.Bad urban planning .