PJ.2.1 Covid-19 variant spreads across several countries, prompting surveillance
A newly identified Covid-19 variant, PJ.2.1, has drawn attention in 2026 as it spreads rapidly across multiple nations. Laboratory studies indicate it enters human cells more effectively than earlier strains. It shows only limited ability to evade antibodies, but its stronger binding to the ACE2 receptor has raised concerns about transmissibility. Researchers stress that continued surveillance and further studies are needed to determine its effect on disease severity and public health.
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