Coronavirus updates: 23-year-old college student dies from COVID-19

There were 166,045 new cases of COVID-19 confirmed in the United States on Monday, according to a real-time count kept by Johns Hopkins University.

It's the fourth day in a row that the country has reported over 150,000 newly diagnosed infections. Monday's count is slightly less than the all-time high of 177,224 on Nov. 13.

An additional 995 fatalities from COVID-19 were also registered nationwide on Monday, down from a peak of 2,609 new deaths on April 15.

A total of 11,205,486 people in the United States have been diagnosed with COVID-19 since the pandemic began, and at least 247,220 of them have died, according to Johns Hopkins. The cases include people from all 50 U.S. states, Washington, D.C. and other U.S. territories as well as repatriated citizens.

Much of the country was under lockdown by the end of March as the first wave of pandemic hit. By May 20, all U.S. states had begun lifting stay-at-home orders and other restrictions put in place to curb the spread of the novel coronavirus. The day-to-day increase in the country's cases then hovered around 20,000 for a couple of weeks before shooting back up and crossing 100,000 for the first time on Nov. 4.

The United States saw over a million new coronavirus cases over the last week, according to an internal memo from the United States Department of Health and Human Services that was obtained by ABC News.

This comes as 53 states and territories are in an upward trajectory of new cases, according to the agency.

The 1,070,845 cases recorded between Nov. 9-15 represent a 39.5% increase from the previous seven-day period, according to the memo.

There were 8,443 new COVID-19 deaths in the same period, representing a 23.5% increase from the previous week, according to HHS.

The national test-positivity rate increased from 8.7% to 10.7% in week-to-week comparisons, the memo said.

Roughly a quarter of the nation's hospitals had 80% of their ICU beds filled, according to HHS.

The agency said 147 U.S. counties are identified as "rapid risers" as of Nov. 12.

In Michigan, which is slated to restrict nonessential businesses this week, all regions in the state are now at the highest risk level for spread, according to the memo.

ABC News' Josh Margolin contributed to this report.

Iowa Gov. Kim Reynolds announced her state will issue a mask mandate for all indoor activity starting midnight Tuesday.

Reynolds said in a news conference that the state recorded more than 52,000 new cases in the past two weeks, and that one in every four current hospital patients has COVID-19.

"In late October hospitalizations were approaching the 100-a-day mark," the Republican governor said. "Now they have topped 200 a day."

The governor's order "limits indoor social, community, business and leisure gatherings or events to 15 people," and limits outdoor gatherings to 30 people, according to a news release.

"This includes wedding and funeral receptions, family gatherings and conventions," the governor's office said in a statement.

The order will remain in effect until Dec. 11 at the earliest, according to the governor's office.

As of Monday, 188,392 Iowans have tested positive for the virus and 1,991 residents have died from the disease, according to the state's Health Department.

Forty counties in California, representing 94% of the state's population, will move backward into the most restrictive reopening tier, Gov. Gavin Newsom announced Monday.

"This is the fastest increase California has seen since the beginning of this pandemic," Newsom said. "California is pulling the emergency brake."

The new restrictions end most indoor activities. Outdoor dining, gyms, religious services, movies and museums are still permitted. In addition to tightening rules on businesses, Newsom said he was discouraging non-essential out-of-state travel and considering implementing a curfew.

ABC News' Matthew Fuhrman contributed to this report.