New Covid Variant PJ.2.1 Spreads Globally: Symptoms, Risks And Key Facts

A new COVID-19 variant , PJ.2.1, is attracting attention as it spreads across North America and other parts of the world. First identified in Ontario, Canada, in May 2026 , the emerging SARS-CoV-2 lineage has subsequently been detected in the United States, Europe, Australia, New Zealand and parts of Asia. Its spread has raised questions about whether it could trigger another wave of infections and whether existing immunity offers sufficient protection. The variant has a highly mutated spike protein, the part of the coronavirus that helps it enter human cells. However, preliminary research published in the Journal of Infection suggests that its growth may be linked more closely to increased binding to the ACE2 receptor than to a substantial ability to evade vaccine-induced antibodies.