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Paris 2024 Olympic and Paralympic Games: Description of public health-related events[1]

Geoffroy S, et al · 2025 · Public Health

Summary

Report on the public-health event detection and verification system operated during the Paris 2024 Olympic and Paralympic Games: eight public-health events (signals warranting assessment) were reported during the Games period, most of which could not be validated on investigation. Describes the signal-verification workflow and the low true-positive yield of mega-event epidemic-intelligence surveillance.

So what

The surveillance-side complement to Fantou's health-system-impact analysis of the same Games: Fantou measured demand (EDs flat, EMS +10%), Geoffroy measured the epidemic-intelligence layer — and found 8 signals, mostly unvalidated. The honest low yield is itself the finding: mega-event surveillance systems generate few true events, so their value is assurance and speed, not case counts. Belongs in the FIFA26/LA28 planning cluster (Lee, Fantou, Mullen, Shabani, Sekizaki) as the epidemic-intelligence benchmark.

Key findings

  • 8 public-health events reported during Paris 2024 Games period
  • Most signals could not be validated on investigation
  • Documents the signal-verification workflow for mega-event surveillance
  • Low true-positive yield = assurance value, not case-finding value
  • Complement to Fantou (same Games, demand side); FIFA26/LA28 cluster member

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