The World Health Organization warns of very high risk posed by omicron variant : Coronavirus Updates : NPR

People step off a tram in Nottingham, England, a city where a case of the omicron variant of the coronavirus was identified last week. Joe Giddens/PA Images via Getty Images hide caption toggle caption Joe Giddens/PA Images via Getty Images People step off a tram in Nottingham, England, a city where a case of the…