Global Health Security

GHS Fundamentals - World on Alert

• Global Health Security (GHS): Encompasses proactive and reactive strategies to safeguard populations worldwide from acute public health threats that can cross borders, emphasizing collective, global responsibility.
• Core Mission (PDR Cycle):
  • Prevent: Outbreaks and public health events.
  • Detect: Threats early through robust surveillance.
  • Respond: Coordinated, rapid, and effective action.
• Threat Spectrum: Includes naturally occurring epidemics/pandemics, accidental industrial/laboratory releases, and deliberate biological/chemical events.
• Why Vigilance is Key (World on Alert):
  • Rapid global travel & trade accelerate pathogen spread.
  • Impacts national security, economic stability, and human lives.
• Foundational Pillars: Surveillance, laboratory capacity, skilled workforce, risk communication, emergency operations.

⭐ The International Health Regulations (IHR 2005) are a legally binding agreement for 196 countries, requiring development of minimum core public health capacities to detect, assess, report, and respond to public health events.

Threat Landscape - Bugs & Beyond

• Emerging & Re-emerging Infectious Diseases (EIDs):
  • Pandemic potential: Influenza, Coronaviruses (COVID-19), Ebola, Zika, Nipah.
  • High impact: transmissibility, morbidity, mortality, socio-economic disruption.
• Antimicrobial Resistance (AMR):
  • "Superbugs" (MRSA, CRE, XDR-TB) compromise treatment efficacy.
  • Drivers: Antimicrobial overuse (humans, agriculture).
  • Undermines modern medicine.
• Zoonoses:
  • Animal-to-human transmission.
  • Drivers: Deforestation, wildlife trade, agricultural intensification.

  ⭐ Approximately 75% of new or emerging infectious diseases are zoonotic.

• Deliberate Biological Events (Bioterrorism):
  • Deliberate pathogen/toxin release (Anthrax, Smallpox).
  • Needs high-consequence agent preparedness.
• Laboratory Safety & Security (Biorisk):
  • Lab-acquired infections/accidental release.
  • Dual-Use Research of Concern (DURC). oka

Global Rulebook - IHR & Players

• International Health Regulations (IHR 2005): Legally binding for 196 states. Aims to prevent, control, and respond to international disease spread.
  • Core principle: Develop national core capacities (e.g., surveillance, laboratory, response).
  • Mandates reporting potential Public Health Emergencies of International Concern (PHEIC) to WHO.
• Key Players & Roles:
  • WHO: Global coordination, PHEIC declaration, technical support, monitoring IHR implementation.
  • National Governments (e.g., MoHFW, India): IHR implementation, National IHR Focal Point (NFP) operations, reporting to WHO.
  • National Public Health Institutes (e.g., NCDC, India): Surveillance, outbreak investigation, research, technical guidance.

⭐ The IHR (2005) requires countries to notify WHO of events that may constitute a PHEIC within 24 hours of assessment by the National IHR Focal Point.

Fortifying Defenses - Prep & Action

• Preparedness (Proactive Shield):
  • Surveillance Systems: Integrated Disease Surveillance Programme (IDSP) for early detection; event-based surveillance.
  • Laboratory Capacity: Network of BSL-2/3/4 labs; genomic sequencing for pathogen characterization.
  • Medical Countermeasures: Strategic stockpiling of vaccines, antivirals, PPE, diagnostic kits.
  • Workforce Development: Field Epidemiology Training Program (FETP); trained Rapid Response Teams (RRTs).
• Response (Reactive Sword):
  • Activation & Coordination: Emergency Operations Centers (EOCs); Incident Management System (IMS).
  • One Health Approach: Collaborative surveillance & response across human, animal, environmental sectors. 📌 One Health Triad
  • Risk Communication & Community Engagement (RCCE): Transparent, timely, culturally appropriate information; combatting misinformation.
  • Containment Strategies: Isolation, quarantine, contact tracing, vaccination campaigns (e.g., ring vaccination).

⭐ The Epidemic Diseases Act, 1897, though archaic, is often invoked for public health emergencies in India, highlighting need for updated legal frameworks.

High‑Yield Points - ⚡ Biggest Takeaways

• IHR (2005): Legally binding framework for global health security; mandates outbreak reporting.
• PHEIC: WHO declaration for extraordinary public health events posing international risk.
• GHSA: Aims to build country capacity to prevent, detect, and respond to infectious threats.
• One Health: Recognizes interconnectedness of human, animal, and environmental health.
• Core Capacities (IHR): Essential national public health functions for surveillance and response.
• AMR: A major escalating global health security threat requiring urgent action.
• Surveillance & Response: Critical for early detection and containment of outbreaks.