New Covid variant has been identified and is already spreading in 25 states

Key Points:

• A new Covid variant, BA.3.2, descended from omicron, is spreading across the U.S. and has been detected in multiple states through clinical and wastewater samples, indicating a wider presence than currently observed.
• BA.3.2 carries 70 to 75 genetic mutations in its spike protein, enabling it to spread more easily and evade immune protection from current vaccines, which primarily target the JN.1 subvariants.
• Laboratory studies show that existing 2025–2026 mRNA vaccines have reduced antibody neutralization against BA.3.2, raising concerns about vaccine effectiveness and the potential need for updated vaccines.
• Although BA.3.2 has been found in hospitalized patients, including older adults with preexisting conditions and a young child, there is no evidence yet that it causes more severe disease than other Covid variants.
• Covid remains endemic with multiple variants circulating, and experts emphasize the importance of minimizing virus replication to reduce the emergence of new variants, even as other respiratory illnesses like flu and RSV currently outpace Covid cases.