The United States passed another milestone in the yearlong struggle against COVID-19, as total coronavirus infections exceeded 25 million, or about 8% of the population, according to data reported Sunday by Johns Hopkins University.

On Saturday, the nation added 172,878 cases, 0.7% less than the average of the preceding seven days, figures compiled by Johns Hopkins and Bloomberg show. While daily case counts have declined after spiking to records of almost 300,000 after the Christmas holiday, the weekly average of about 175,000 new infections every day remains high.

The U.S. death toll surpassed 417,000 as another 3,390 people died of COVID-19 nationwide. It was the lowest increase on a Saturday in three weeks.

President Joe Biden, who has detailed the first national strategy against the coronavirus pandemic, warned that deaths may reach 600,000 before vaccines begin to create immunity on a large scale. Experts say that 25 million coronavirus infections is almost certainly an undercount, as many people are asymptomatic or untested.

The U.S. count is more than double that of India, which has world’s second-most infections.