'Tidal wave': Omicron could put US Covid-19 surge into overdrive

Two years into the coronavirus pandemic, the United States is confronting another dark winter, with the red-hot Omicron variant threatening to worsen an already dangerous surge of cases.

Hospitalisations for Covid-19 have jumped 45 percent over the last month, and cases have increased 40 percent to a seven-day average of 123,000 new infections a day, according to a Reuters tally...