Sources of Infectious Agents

Pathogens associated with HAIs are derived primarily from human sources, but contaminated objects and environmental sources are also implicated.1 Human sources include patients, HCP, house hold members, and visitors. A source-individual may have an acute infection, or may be transiently or chronically colonized by pathogenic organisms. It is also important to recognize that the source-individual may be asymptomatic or may be in the incubation (subclinical) phase of infection.