Moderna boss warns about vaccine efficacy against omicron

<p>From the BBC World Service: The Moderna CEO Stéphane Bancel expects the number of mutations in the latest COVID-19 variant mean new vaccines will be required next year, sending ripples of nervousness through financial markets. But what do we actually know about the impact of omicron? And, a new report suggests some high food prices are unlikely to fall next year.</p>