The coronavirus pandemic reached a grim new milestone in the United States on Friday with the nation's cumulative death toll from Covid-19 surpassing 900,000, even as the daily number of lives lost has begun to level off, according to data collected by Reuters.

The latest tally marks an increase of more than 100,000 US Covid-19 fatalities since Dec 12, coinciding with a surge of infections and hospitalisations driven by the highly contagious Omicron variant of...