University of Michigan - Ann Arbor

Virulence factors are produced by individual pathogens, they determine the extent and severity of disease. Virulence factors are encoded by genes. When the genes encoding virulence factors are inactivated, virulence in the pathogen is diminished.

Virulence Factor

Bacteria use different kinds of virulence factors that contribute to each step of pathogenesis.

Bacterial Virulence Factors

Viruses use different virulence factors to gain access to a host cell and cause disease.

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