A “common source” of disease is a source that causes more than one person in a household to become ill. There are four common sources of disease control: waterborne (spread by drinking water), foodborne (diseases from eating contaminated food), contact transmission, and environmental pollution. However, the actual types of diseases spread by these channels will be different for each type.
Most diseases can be spread via a shared source, but in some cases, it’s not always clear. The fact is that every disease that can be contracted with an item/source is referred to as cross-contamination.
Diseases that are not normally spread by a common source
Diseases that are not normally spread by a common source include:
-Dengue fever (spread by mosquitoes)
-Hantavirus (spread through rodent droppings)
-Lyme disease (spreads via ticks)
-Hepatitis C (spread through sex and blood-to-blood contact)