More Americans were hospitalized with Covid-19 on Jan. 6 than at any time since the pandemic began, as total coronavirus infections crossed the 21 million mark, deaths soared across much of the United States and a historic vaccination effort lagged.

More Americans were hospitalized with Covid-19 as of Jan. 6 than at any time since the pandemic began, as coronavirus infections and deaths soared across much of the United States and a historic vaccination effort lagged.