Proportion of Emergency Department Visits For
Influenza-like Illness (ILI) per Week

% above or
below 2009-2010
seasonal mean:

• above > 20%
• above < 20%
• mean (-5% - 5%)
• below < 20%
• below > 20%

Data from last year 6 months 3 months

International Society for Disease Surveillance

The International Society for Disease Surveillance (ISDS) is currently working in partnership with the Centers for Disease Control (CDC) and the Public Health Informatics Institute (PHII) to improve surveillance for influenza-like illness. This initiative leverages the Distribute syndromic surveillance project, developed and piloted by ISDS, to enhance and support Emergency Department (ED) surveillance in order to make aggregate level data available to experts in public health. Distribute complements existing surveillance methods by providing a more comprehensive and detailed situational awareness of geographic and age-specific patterns of influenza-like illness.