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In just six weeks, the US death toll from coronavirus went from zero to more than 10,000.

That grim milestone was reached Monday, shortly after officials warned this will be the toughest week yet in the pandemic.

Michigan hospitals are three to six days away from running out of critical supplies, the governor said.

Mortuaries in New Orleans are already out of space, and the mayor said she needs help getting more refrigeration.

And New York, New Jersey and Detroit will see peaks in hospitalizations and deaths this week, a US Health and Human Services assistant secretary said.

Other US cities will experience their own peaks in the coming weeks, Dr. Brett Giroir told NBC’s “Today” show Monday. He said the peaks reflect infections that occurred two or three weeks ago.

“We may be seeing the worst upon us right now in terms of outcomes,” Giroir said.

Nationwide, the virus has infected over 347,000 people killed more than 10,300, according to data compiled by Johns Hopkins University.

But there could be many more deaths from coronavirus than we realize, the US Centers for Disease Control and Prevention said. Some “may be misclassified as pneumonia deaths in the absence of positive test results,” the CDC said.

“We really are just seeing the tip of the iceberg, and a lot of it has to do with the tests we have available,” said Dr. Panagis Galiatsatos, a critical care physician at Johns Hopkins Medicine in Baltimore.

Yet there are also signs of progress. More Americans are finding creative ways to help. And in the US epicenter of coronavirus, New York City, the worst of the pandemic might be over soon.

What hotspots across the country are grappling with

At hospitals in Michigan, “we are running dangerously low on PPE,” or personal protective equipment, Gov. Gretchen Whitmer said Monday.

“At Beaumont hospital, we have less than three days before N95 masks run out. At Henry Ford health system, we have less than four days,” Whitmer said.

At some hospitals across the state, “there are less than three days until (face) shields run out, and less than six days until surgical gowns run out,” she said.

In New Orleans, the coroner’s office and mortuaries have reached their limits, Mayor LaToya Cantrell said. She’s asked the federal government for additional refrigeration.

The New Orleans convention center, which sheltered Hurricane Katrina evacuees 15 years ago, has now been converted into an emergency hospital. It’s set to open Monday.

Across Louisiana, more than 13,000 people have been infected with coronavirus and at least 477 have died. Gov. John Bel Edwards said his state could run out of ventilators by the end of the week if cases continue to surge.

But the hardest-hit state, New York, said the number of deaths is not rising as sharply as it has been.

The total death toll in New York state reached 4,758 on Monday, up from 4,159 on Sunday.

“While none of this is good news, the flattening — possible flattening of the curve — is better than the increases that we have seen,” Gov. Andrew Cuomo said Monday.

Your top coronavirus questions, answered daily

Religious holidays threaten social distancing

Health officials are stressing the need for social distancing as several faiths observe religious holidays.

This week is Holy Week in the Christian faith, culminating with Easter on Sunday.

The Jewish holiday of Passover starts Wednesday evening. And the Muslim holy month of Ramadan begins later this month.

Boston Mayor Marty Walsh said he empathized with worshipers but implored them to stay home.

“I know it’s a very difficult thing, as a Catholic,” Walsh said.

Many states have exemptions from stay-at-home orders for religious gatherings. But even in states with stricter orders, some church leaders are defying the rules and still holding service.

The Rev. Tony Spell of Life Tabernacle Church in Baton Rouge, Louisiana, was charged last week with violating the state’s ban. But on Sunday, he and 1,200 congregants gathered again.

“We don’t get our rights to worship freely from the government. We get those from God,” Spell said Sunday. “We’d rather obey God than man.”

Many places of worship are holding services virtually to help mitigate the spread of coronavirus.

Miami-Dade County Mayor Carlos Gimenez thanked religious leaders who held services online, calling it the “safest way to keep us all connected.”

Scrambling for solutions

With no end to this pandemic in sight, more Americans are getting creative in helping fight the virus’s spread.

The Department of Veterans Affairs will open more than 1,500 hospital beds for civilians in multiple states, VA Secretary Robert Wilkie said.

The VA is helping in New York, New Jersey, Louisiana, Michigan and Massachusetts.

Across the country, more Americans are wearing homemade cloth masks as health care workers worry about dwindling supplies of surgical masks.

The surge in people wearing cloth masks in public came after the CDC said it could help prevent asymptomatic carriers of the virus from infecting others.

And 3D printer companies are stepping in to help hospitals in dire need of face shields.

Doctors and nurses say any help is needed.

In one Brooklyn emergency room, it seems almost every patient — no matter what they came in for — is found to have coronavirus, Dr. Sneha Topgi said.

“I think we’re still at the beginning, and I am scared,” Topgi said. “I’m scared for myself, and I’m scared for everyone in general.”