<unk>  occurs worldwide but is most common in temperate or tropical climates. It is an occupational hazard for many people who work outdoors or with animals, for example, farmers, sewer workers, veterinarians, fish workers, dairy farmers, or military personnel. It is a recreational hazard for campers or those who participate in outdoor sports in contaminated areas and has been associated with swimming, wading and whitewater rafting in contaminated lakes and rivers. The incidence is also increasing among urban children. Epidemiology of human<unk>  is complex and dynamic due to the interaction of pathogen, host, animal reservoir and environment. With the increase in urban population, occupational and recreational exposure to surface water and climatic changes results in increase in prevalence of<unk>  recently.
Leptospirosis epidemiology and demographics
Bartonellosis epidemiology and demographics
Listeriosis epidemiology and demographics
Brucellosis epidemiology and demographics
Typhoid fever epidemiology and demographics
Salmonellosis epidemiology and demographics
Relapsing fever epidemiology and demographics
Toxoplasmosis epidemiology and demographics