WHO Exercise Polaris II: Testing Global Pandemic Preparedness

WHO Tests Global Pandemic Readiness With Exercise Polaris II Simulation

Planning for a pandemic on paper is one thing; executing those plans under pressure is another. To bridge that gap, the World Health Organization (WHO) recently conducted Exercise Polaris II, a high-level, two-day simulation designed to stress-test the world’s ability to respond to a major health crisis. By simulating a fictional bacterial outbreak, the exercise pushed 26 countries and hundreds of experts to coordinate in real-time, ensuring that global health security is a continuous investment rather than a reactive effort.

What Was Exercise Polaris II?

Held on April 22 and 23, Exercise Polaris II was a simulation centered on the global spread of a fictional new bacterium. This exercise built upon the foundation of Polaris I, which took place in April 2025 and focused on a fictional virus. The goal was to move beyond theoretical planning and test how countries actually activate emergency workforce structures, manage information flow, and coordinate with international partners.

The scale of the simulation was significant, bringing together:

• 26 countries and territories, including nations such as Brazil, India, France, Egypt, and Thailand.
• 600 health emergency experts.
• Over 25 partners, including UNICEF, Médecins Sans Frontières, and the Africa Centres for Disease Control and Prevention.

“Exercise Polaris II showed what is possible when we act together,” said Dr. Chikwe Ihekweazu, Executive Director of WHO’s Health Emergencies Programme. He noted that the exercise reflected the spirit of a connected emergency workforce ready to respond whenever and wherever needed.

The Frameworks Powering the Response

The simulation wasn’t just a drill; it was a practical application of two critical WHO frameworks designed to standardize how the world handles emergencies.

The Global Health Emergency Corps (GHEC) Framework

Published in June 2025, the Global Health Emergency Corps (GHEC) framework focuses on strengthening the health workforce. It operates on the principles of equity, solidarity, and sovereignty, providing a roadmap for countries to exchange information and deploy regional or global personnel during a crisis.

WHO Director-General Dr. Tedros Adhanom Ghebreyesus emphasized that global cooperation is “not optional – it is essential,” stating that the GHEC’s purpose is to build trust and strengthen connections across borders.

National Health Emergency Alert and Response Framework

While GHEC handles the global scale, the National health emergency alert and response framework, published in October 2025, focuses on the internal mechanics. It outlines the specific coordination systems and actions required for an effective response at the local, sub-national, and national levels.

Turning Plans into Action: Key Outcomes

One of the most critical aspects of Polaris II was the transition from theory to practice. Edenilo Baltazar Barreira Filho, Director of the Public Health Emergencies Department for the Ministry of Health in Brazil, pointed out that it’s not enough to have plans on paper—what matters is how they perform in real-life conditions.

Beyond workforce coordination, the exercise explored the integration of AI-enabled tools to support planning and workforce organization, signaling a shift toward more tech-driven emergency management. The simulation also utilized new networks, such as the Health Emergency Leaders Network for Africa and the Eastern Mediterranean, to enhance regional collaboration.

A Collaborative Global Effort

The exercise demonstrated the necessity of a “surge support” system, where technical expertise can be rapidly shifted to the countries that need it most. This was practiced through coordination with various agencies, including:

• The International Federation of Red Cross and Red Crescent Societies.
• The Robert Koch Institute and UK-Med.
• The Global Outbreak Alert and Response Network (GOARN).
• The Emergency Medical Teams initiative and Standby Partners.

The Big Picture: HorizonX

Exercise Polaris II is not a standalone event but part of HorizonX, WHO’s multi-year simulation programme. By treating pandemic preparedness as a continuous investment rather than a periodic task, WHO aims to ensure that the global community is never starting from scratch when a real pathogen emerges.

Frequently Asked Questions

What is the difference between Polaris I and Polaris II?

Polaris I, held in April 2025, centered on a fictional virus. Polaris II expanded the scope, focusing on a fictional bacterium and incorporating a larger number of participating countries and new regional networks.

What is the Global Health Emergency Corps (GHEC)?

GHEC is a framework published by the WHO in June 2025. It provides guidance on strengthening the health workforce to respond to emergencies based on sovereignty, equity, and solidarity, facilitating the deployment of personnel and information exchange between nations.

Which countries participated in the simulation?

Participants included Bangladesh, Brazil, Brunei, Colombia, Egypt, El Salvador, France, Georgia, Ghana, India, Indonesia, Jordan, Kenya, Kosovo, Libya, Malaysia, Nepal, Oman, Paraguay, Philippines, Qatar, Republic of Congo, Rwanda, Suriname, Thailand, and Yemen.