In the study of epidemics, lethality is defined as the percentage of those infected who die from the disease in question. Multiplied with morbidity to produce the epidemic mortality.

Other names for lethality are case mortality and case fatality.

Le*thal"i*ty (?), n. [Cf. F. l'ethalit'e.]

The quality of being lethal; mortality.

 

© Webster 1913.

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