Table 1 Definitions of data included in MSF’s EWAR database, based on WHO EWAR definitions [2]
Term | Definition |
|---|---|
Signal | A signal is reported information, for example rumours, or information that represents a potential acute risk to human health. It has not yet been verified as to whether or not it meets the event definition of the surveillance system |
Event | Reported information (signal) on a potential acute risk to human health that has been verified |
Alert | A public health event that has been (i) verified and (ii) risk-assessed and (iii) requires a response (an investigation, an intervention or a communication) |
Response | Any public health action triggered by the detection of an alert, such as vaccination and water, sanitation and hygiene (WASH)-related activities, among others |