The spread of infection can be visualized as a six-link chain:
The spread of an infection within a community is referred to as a "chain," which is made up of several interconnected phases that describe how a pathogen moves.
What is pathogen?
In biology, a pathogen is any organism or agent that can cause disease in the broadest sense. A pathogen is also known as an infectious agent or simply a germ. The term pathogen first appeared in the 1880s.
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