The number of patients with Covid-19 in U.S. hospitals surpassed last winter’s peak over the weekend and the U.S. reported a single-day record of 1.5 million Covid cases on Monday.

A larger share of patients appear to be entering hospitals for something other than Covid and testing positive once they’re in a facility.

Even if the omicron variant causes less severe disease, U.S. hospitals can still be strained due to the high volume of patients and staffing shortages.