attack rate
Disease spread measure
Attack rate is an epidemiological measure of how many people in a population develop a disease during a specific outbreak or time period, usually expressed as a percentage.
Despite the name, it's technically a proportion rather than a rate.
Public health officials use attack rates to assess outbreak severity and transmission: The attack rate among wedding guests was 40%.
Secondary attack rate measures spread within households or close contacts after initial exposure.
- incidenceRate of occurrence
- transmissionSending of information
- outbreakSudden eruption of trouble
- disease outbreakRapid spread of illness
- epidemicWidespread disease occurrence
infection · spread · contagion · super spreader · susceptible · exposure · morbidity · cases · secondary · contact · contact tracing · vector · pathogen · virulence · cluster · population · risk · onset
- epidemiologyepidemic, epidemiology, pandemic, outbreak, endemic
attack ratesurvival rate
Share of survivors measured
recovery rate · mortality rate · case fatality rate · death rate · fatality rate
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