Event-Based Surveillance During EXPO Milan 2015: Rationale, Tools, Procedures, and Initial Results

Health Secur. 2016 May-Jun;14(3):161-72. doi: 10.1089/hs.2015.0075.

Abstract

More than 21 million participants attended EXPO Milan from May to October 2015, making it one of the largest protracted mass gathering events in Europe. Given the expected national and international population movement and health security issues associated with this event, Italy fully implemented, for the first time, an event-based surveillance (EBS) system focusing on naturally occurring infectious diseases and the monitoring of biological agents with potential for intentional release. The system started its pilot phase in March 2015 and was fully operational between April and November 2015. In order to set the specific objectives of the EBS system, and its complementary role to indicator-based surveillance, we defined a list of priority diseases and conditions. This list was designed on the basis of the probability and possible public health impact of infectious disease transmission, existing statutory surveillance systems in place, and any surveillance enhancements during the mass gathering event. This article reports the methodology used to design the EBS system for EXPO Milan and the results of 8 months of surveillance.

Publication types

  • Evaluation Study

MeSH terms

  • Anniversaries and Special Events
  • Biosurveillance / methods*
  • Humans
  • Italy
  • Linear Models
  • Program Development
  • Program Evaluation
  • Public Health Surveillance / methods*