It was dated that WHO declared that the world was facing a new variant of Covid Omicron:

The WHO declared Omicron a variant of concern on November 26, 2021, triggering global health responses. Studying this highlights the role of global health organizations, the challenges of pandemic management, and its impact on public health systems. It also offers insights into how rapid responses mitigate threats, providing lessons on coordinating international health strategies to address emerging diseases effectively.