The list of SARS-CoV-2 variants – each with its own unique qualities that give it an edge – just keeps growing. Matt Anderson Photography/Moment via Getty Images

Alpha then delta and now omicron – 6 questions answered as COVID‑19 cases once again surge across the globe

People are buzzing with questions about the omicron variant and whether it could help usher in herd immunity. A team of virologists deciphers the latest findings.
The best way to stop a contagious virus like COVID-19 is through a worldwide vaccination program. Patrick T. Fallon/AFP via Getty Images

Is COVID‑19 here to stay? A team of biologists explains what it means for a virus to become endemic

Some viruses go extinct, while others stick around. The virus that causes COVID-19 seems likely to remain with us for the long term.

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