The disease-causing agents are called PATHOGENS. These pathogenic organisms are harmful micro-organisms.
Pathogenic organisms can cause different infectious and non-infectous diseases.
For example, foodborne illnesses are generally caused by pathogens when a person consumes contaminated food.
Pathogenic organisms negatively affect the mode in which the human body functions (for example, they can destroy cells).
A well-known example of pathogenic microorganisms are Escherichia coli bacteria, which can cause, among other illnesses, urinary tract infections.
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