The U.S. government hit the accelerator on shipments of Covid-19 vaccines after a month of largely stagnant weekly deliveries, giving states the doses they say they need to finish vaccinating priority groups and open shots to all adults in the coming weeks.

The U.S. coronavirus death toll topped 400,000 on Jan. 19, according to a Reuters tally, as the country hardest hit by the pandemic struggled to meet the demand for vaccines to stem the spread of infection.

The United States recorded more than 1 million new Covid-19 cases in the past week as new infections rose in every state except for Hawaii, according to a Reuters analysis of state and county reports.

New York, the former epicenter of the U.S. Covid-19 pandemic, became the fourth U.S. state to surpass half a million coronavirus cases amid a nationwide surge in infections.

New cases of Covid-19 rose in 27 out of 50 U.S. states in September compared with August, led by an increase of 111% in Wisconsin, according to a Reuters analysis.

The number of tests coming back positive for Covid-19 is topping 25% in several states in the U.S. Midwest as cases and hospitalizations also surge in the region, according to a Reuters analysis.

Better-than-expected social distancing practices have led an influential research model to lower the projected U.S. coronavirus death toll by 12 percent, while predicting some states may be able to safely begin easing restrictions as early as May 4.