International Health Regulations
Dr. Arun Mitra
Presentation Overview
Today’s Lecture covers:
- What is IHR?
- Why do we need IHR?
- Historical Evolution
- Understanding PHEICs
Advanced Topics
- Active PHEICs Today
- Core Capacities Framework
- 2005 vs 2024 Changes
- Future Implications
What is IHR?
Official Definition
The International Health Regulations are legally binding international law under Article 21 of the WHO Constitution that provide an overarching legal framework for countries to work together to prevent, detect, and respond to public health risks that have the potential for international spread.
– World Health Organization (2016)
Original IHR (1969)
Core Legal Framework
- Binding International Law: Not guidelines
- Universal Coverage: 196 WHO Member States
- WHO Constitution Article 21: Legal authority
- Automatic Entry: Unless rejected/reserved
Fundamental Principles
Maximum Security with Minimum Interference
Achieve highest protection against international disease spread while avoiding unnecessary interference with international traffic and trade.
Scope and Application
Biological
Infectious diseases, pandemics
Chemical
Toxic contamination, spills
Radiological
Nuclear accidents
Unknown Origin
Emerging threats
Key Characteristics
Disease-Agnostic: Applies regardless of pathogen
Event-Based: Focuses on unusual events
Risk-Based: Proportional response
Evidence-Based: Scientific decisions
Rights-Respecting: Protects human dignity
Global Coverage: All territories and borders
Why Do We Need IHR?
The Global Health Security Challenge
Our Interconnected World
4.6B
Air passengers annually (2019)
24-48h
Time for global pathogen spread
11B
Tons of goods traded daily
1.4B
International tourist arrivals
Modern Risks
Urbanization: 68% in cities by 2050
Climate Change: Expanding vectors
AMR: 10M deaths by 2050
Emerging Pathogens: 75% from animals
Bioterrorism: Intentional threats
Risks to Global Health
Risks to Global Health
Historical Impact
1918 Flu: 50-100 million deaths
SARS (2003): $100 billion economic impact
COVID-19: 7+ million deaths, $28 trillion loss
Historical Evolution of IHR
From Quarantine to Global Health Security
- 1892-1938 - Multiple Sanitary Conventions
-
Separate agreements for cholera, plague, yellow fever
- 1969 - First International Health Regulations
-
WHO adopts unified regulations for three diseases
- 2005 - Current IHR Framework
-
All-hazards approach adopted, enters force 2007
- 2024 - Major Amendments
-
Pandemic emergency, equity mechanisms added
What is a PHEIC?
Definition
An extraordinary event which is determined to constitute a public health risk to other States through the international spread of disease and to potentially require a coordinated international response
– World Health Organization (2016)
Four Key Criteria
- Extraordinary: Unusual or unexpected event
- International Risk : Risk to other countries
- Serious Impact: Potential for significant harm
- Coordinated Response: Requires international action
New: Pandemic Emergency (2024)
Highest Level of Alert
Important
The 2024 amendments introduced “Pandemic Emergency” as a new, higher level of alert specifically for communicable diseases with pandemic potential (World Health Organization 2024).
Six Criteria for Pandemic Emergency
Wide geographical spread
Overwhelming health systems
Severe social/economic disruption
Need for rapid international action
High morbidity/mortality
Novel or enhanced pathogen
Declaration Process
Detection - Country identifies event
Notification - Report to WHO (24h)
Assessment - WHO evaluation
Emergency Committee - Expert advice
Declaration - Director-General decides
Fukushima Nuclear Disaster
Fukushima Nuclear Disaster
Fukushima Nuclear Disaster
Fukushima Nuclear Disaster
Fukushima Nuclear Disaster
SARS Timeline
COVID Timeline
Contagion
References