Pathogen Definition

Pathogen is a microbe capable of causing illness. The most common pathogens are bacteria, fungi, parasites, and viruses. The process through which a pathogen, also called an infectious agent, causes illness is pathogenesis.

The body attempts to protect itself from pathogens through numerous mechanisms, key among them being antibodymediated immunity and cell-mediated immunity.

Vaccines and treatments with antibiotic medicationsantiviral medications, and antifungal medications are among the methods available to contain and eradicate pathogens once they establish infection in the body.


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