Which date was that WHO declared that the world was facing a new variant of Covid Omicron:

🧠 Explanation:

The WHO declared the Omicron variant of COVID-19 on November 26, 2021, alerting the world to a new health threat. Studied in health sciences, it shows global health monitoring. In Pakistan, it’s important for understanding pandemics, guiding public health policies, and preparing hospitals and communities for future outbreaks.