News Wrap: Pfizer starts clinical trial of omicron-based vaccine

From PBS NewsHour.

In our news wrap Tuesday, Pfizer began a clinical trial of an updated COVID-19 vaccine designed to ward off the highly contagious omicron variant. The International Monetary Fund slashed its growth forecast citing the omicron variant and other factors. London’s Metropolitan Police Service will investigate gatherings held at Prime Minister Boris Johnson’s offices during a COVID lockdown in 2020.

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