From Fax to Secure File Transfer Protocol: The 25-Year Evolution of Real-Time Syndromic Surveillance in England

Area of Science:

• Public Health
• Epidemiology
• Health Informatics

Background:

• Syndromic surveillance provides early warning of public health incidents and situational awareness.
• The United Kingdom Health Security Agency (UKHSA) coordinates England's national syndromic surveillance service.
• The service analyzes daily healthcare usage data from over 200,000 patient encounters.

Purpose of the Study:

• To describe the 25-year evolution of the English syndromic surveillance system.
• To highlight improvements in data sources, management, and technological enablers.
• To showcase advancements in data analytics and visualization methods.

Main Methods:

• Evolutionary description of the syndromic surveillance system over 25 years.
• Focus on expansion of data sources and data management.
• Integration of technological and digital advancements for automated national service.

Main Results:

• The system evolved from a single-region pilot to an all-hazard, multisystem national service.
• It now monitors over 140 syndromic indicators across diverse health conditions.
• The service provides advanced warning for seasonal influenza and monitors incidents like COVID-19.

Conclusions:

• The English syndromic surveillance system has significantly advanced over 25 years.
• It is a crucial tool for routine public health surveillance and emergency response.
• Continued improvements in data and technology enhance its effectiveness in safeguarding population health.