virulence

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virulence

 [vir´u-lens]
the degree of pathogenicity of a microorganism as indicated by case fatality rates and/or its ability to invade the tissues of the host; the competence of any infectious agent to produce pathologic effects. adj., adj vir´ulent.

vir·u·lence

(vir'yū-lĕns),
The disease-evoking severity of a pathogen; numerically expressed as the ratio of the number of cases of overt infection to the total number infected, as determined by immunoassay.
[L. virulentia, fr. virulentus, poisonous]

virulence

/vir·u·lence/ (vir´u-lens) the degree of pathogenicity of a microorganism as indicated by the severity of disease produced and the ability to invade the tissues of the host; by extension, the competence of any infectious agent to produce pathologic effects.vir´ulent

virulence

[vir′yələns]
Etymology: L, virulentus, poisonous
the power of a microorganism to produce disease.

virulence

Epidemiology The proportion of persons with clinical disease, who after infection, become severely ill or die. See Neurovirulence.

vir·u·lence

(vir'yū-lĕns)
The disease-evoking power of a pathogen; numerically expressed as the ratio of the number of cases of overt infection to the total number infected, as determined by immunoassay.
[L. virulentia, fr. virulentus, poisonous]

virulence

The capacity of any infective organism to cause disease and to injure or kill a susceptible host.

virulence

the collective properties of an organism that render it pathogenic to another one, the host.

vir·u·lence

(vir'yū-lĕns)
The disease-evoking power of a pathogen.
[L. virulentia, fr. virulentus, poisonous]

virulence

the degree of pathogenicity of a microorganism as indicated by case fatality rates and/or its ability to invade the tissues of the host; the competence of any infectious agent to produce pathological effects.

virulence alteration