, the attack rate is the percentage of an at-risk population that contracts the disease during a specified time interval. It is used in hypothetical predictions and during actual outbreaks
of disease. An at-risk population is defined as one that has no immunity to the attacking pathogen which can be either a novel pathogen
or an established pathogen. It is used to project the number of infections to expect during an epidemic
. This aids in marshalling resources for delivery of medical care as well as production of vaccines and/or anti-viral and anti-bacterial medicines.
[Anthony N. Glaser. High-Yield Biostatistics. Williams & Wilkins. Baltimore. 1995]
The rate is arrived at by taking the number of new cases in the population at risk and dividing by the number of persons at risk in the population.
*Compartmental models in epidemiology
*Risk assessment in public health
The International Biometric SocietyThe Collection of Biostatistics Research ArchiveGuide to Biostatistics (MedPageToday.com)