Epidemiology

Epi Matters

100

This measure is the number of new cases during an epidemic divided by the population exposed.

Attack rate

200

This measure compares the number of malaria cases to all health conditions seen in a facility.

Proportional morbidity

300

This measure is preferred over incidence for chronic diseases with long duration and unclear start dates.

Prevalence

400

This overall formula states that one epidemiological measure ≈ incidence × average duration.

Prevalence