Old dog with new tricks: SARS-CoV-2 variant-specific B cells complement imprinted memory.

Variant-specific B cells in SARS-CoV-2-infected dogs complement existing immune memory, enhancing neutralization of diverse viral variants.

• Why it matters: Understanding how immune responses adapt to new variants is crucial for improving vaccine design and predicting long-term protection against SARS-CoV-2.
• What they did: The study analyzed B cell responses in dogs, identifying both memory and newly generated antibody clones that target different viral variants, highlighting their distinct origins and specificities.
• The result: Findings reveal that variant-specific B cells work alongside imprinted memory, broadening neutralization capacity and informing strategies for durable, variant-resilient immunity.