Virulence differs from pathogenicity in that pathogenicity describes the ability of an organism to cause disease,whereas virulence describes the degree of pathogenicity as the disease develops.

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Pathogenicity and virulence are related concepts, but they are not interchangeable. Pathogenicity refers to the ability of an organism to cause disease, while virulence describes the severity of the disease caused by the organism. A highly virulent organism may cause a more severe disease than a low-virulence one, even if both are pathogenic.

Virulence Differs from Pathogenicity in That Pathogenicity Describes the Ability