By ZEKE MILLER

WASHINGTON (AP) — President Joe Biden and a top health official warned that too many Americans are declaring virus victory too quickly, appealing for mask requirements and other restrictions to be maintained or restored to stave off a “fourth surge” of COVID-19. The head of the CDC said she had a feeling of “impending doom” if people keep easing off.

The double dose of warnings on MOnday came even as Biden laid out hopeful new steps to expand coronavirus vaccinations, with all adults to become eligible over the next five weeks. Biden announced plans to expand the number of retail pharmacies that are administering vaccines, and investments to help Americans get to vaccination sites. But the optimism was tempered by stark warnings about the potential for another wave of cases.

“This is deadly serious,” Biden said, urging governors to reinstate mask mandates and other restrictions that some states have been easing.

Hours earlier, during a virtual White House health briefing, Dr. Rochelle Walensky, director of the Centers for Disease Control and Prevention, grew emotional as she reflected on her experience treating COVID-19 patients who are alone at the end of their lives.

“We have so much to look forward to, so much promise and potential of where we are and so much reason for hope,” she said. “But right now, I’m scared.”

“I’m going to lose the script, and I’m going to reflect on the recurring feeling I have of impending doom.”

Cases of the virus are up about 10% over the past week from the previous week, to about 60,000 cases per day, with both hospitalizations and deaths ticking up as well, Walensky said. She warned that without immediate action the U.S. could follow European countries into another spike in cases and suffer needless deaths.

“I have to share the truth, and I have to hope and trust you will listen,” she said.

Later Monday, Biden addressed the nation from the White House, declaring, “If we let our guard down now, we can see the virus getting worse, not better. People are letting up on precautions, which is a very bad thing.”

Biden delivered a direct appeal to governors, state and local leaders to reinstate mask-wearing requirements if they have lifted them, and said he encouraged leaders to pause plans to further ease virus-related restrictions.

“Please, this is not politics, reinstate the mandate if you let it down,” he said.

Biden announced that by April 19 at least 90% of the adult U.S. population would be eligible for vaccination — and would have access to a vaccination site within 5 miles of home. Quick vaccination would still depend on supply.

Biden had previously directed that all states make all adults eligible for vaccination by May 1, but many have moved to lift eligibility requirements sooner in anticipation of supply increases.

Meanwhile, the White House is moving to double the number of pharmacies participating in the federal retail pharmacy program — it has emerged as among the most efficient avenues for administering vaccines — and increase the number of doses for them to deliver. Retail pharmacies are located relatively close to most Americans and have experience delivering vaccines like flu shots.

Biden announced that the U.S. is expecting delivery of 33 million doses of COVID-19 vaccine this week — including 11 million of the single-dose Johnson & Johnson shot.

More than 1 in 5 adults and nearly 50% of senior American are fully vaccinated, according to data from the CDC. On Thursday, the U.S. set new single-day record for shots in arms: more than 3.2 million.

“Now is not the time to let down,” Biden said. “Now’s not the time to celebrate. It is time to do what we do best as a country: our duty, our jobs, take care of one another.”

“Fight to the finish,” he added. “Don’t let up now.”

Walensky and Dr. Anthony Fauci, the nation’s top infectious disease expert, appealed to elected officials, community leaders and everyday Americans to maintain social distancing measures and mask wearing.

“We are doing things prematurely,” Fauci said, referring to moves to ease up on restrictions. Walensky appealed to Americans, “Just please hold on a little while longer.”

She added: “We are not powerless, we can change this trajectory of the pandemic.”

Walensky pointed to an uptick in travel and loosening virus restrictions for the increase in cases. “People want to be done with this. I, too, want to be done with this,” she said.

“We’ve seen surges after every single holiday,” she reiterated: “Please limit travel to essential travel for the time being.”

The White House, meanwhile is ruling out the creation of a national “vaccine passport” for Americans to verify their immunization status, saying it is leaving it to the private sector to develop a system for people show they’ve been vaccinated. Some other countries are establishing national databases to allow vaccinated people to resume normal activities.

“We do know that there is a segment of the population that is concerned that the government will play too heavy-handed of a role in monitoring their vaccinations,” said White House COVID-19 adviser Andy Slavitt. He said officials are worried that “it would discourage people” from getting vaccinated if the federal government was involved.

The administration, instead, is developing guidelines for such passports, touching on privacy, accuracy and equity, but the White House has not said when those guidelines will be ready.

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Associated Press writer Jonathan Lemire contributed to this report.

By STEVE KARNOWSKI and AMY FORLITI

MINNEAPOLIS (AP) — A former Minneapolis police officer went on trial Monday in the death of George Floyd, which sparked outrage across the U.S. and beyond after bystander video showed Derek Chauvin press his knee on Floyd’s neck for about nine minutes as the Black man went limp.

The judge began by instructing the jury about its duties and about courtroom procedures ahead of opening statements.

A jury of 14 people will hear the case — eight who are white and six who are Black or multiracial, according to the court. Two of the 14 will be alternates. The judge has not said which ones will be alternates and which ones will deliberate the case.

Legal experts said they expected prosecutors to play the video to the jury early on.

“If you’re a prosecutor you want to start off strong. You want to frame the argument — and nothing frames the argument in this case as much as that video,” said Jeffrey Cramer, a former federal prosecutor and managing director of Berkeley Research Group in Chicago.

Floyd, 46, was declared dead after Chauvin, who is white, pressed his knee against Floyd’s neck for about nine minutes. He held his position even as Floyd’s “I can’t breathe” cries faded and he went limp as he was handcuffed and lying on his stomach on the pavement. Chauvin, 45, is charged with unintentional second-degree murder, third-degree murder and manslaughter.

Almost all of the jurors selected during more than two weeks of questioning said they had seen at least parts of the video, and several acknowledged it gave them at least a somewhat negative view of Chauvin. But they said they could set that aside.

Outside the courthouse Monday ahead of opening statements, Floyd family attorney Ben Crump said the trial would be a test of “whether America is going to live up to the Declaration of Independence.” And he blasted the idea that it would be a tough test for jurors.

“For all those people that continue to say that this is such a difficult trial, that this is a hard trial, we refute that,” he said. “We know that if George Floyd was a white American citizen, and he suffered this painful, tortuous death with a police officer’s knee on his neck, nobody, nobody, would be saying this is a hard case.”

The trial is expected to last about four weeks at the courthouse in downtown Minneapolis, which has been fortified with concrete barriers, fencing, and barbed and razor wire. City and state leaders are determined to prevent a repeat of damaging riots that followed Floyd’s death, and National Guard troops have already been mobilized.

The key questions at trial will be whether Chauvin caused Floyd’s death and whether his actions were reasonable.

For the unintentional second-degree murder charge, prosecutors have to prove Chauvin’s conduct was a “substantial causal factor” in Floyd’s death, and that Chauvin was committing felony assault at the time. For third-degree murder, they must prove that Chauvin’s actions caused Floyd’s death, and were reckless and without regard for human life. The manslaughter charge requires proof that Chauvin caused Floyd’s death through negligence that created an unreasonable risk.

Unintentional second-degree murder is punishable by up to 40 years in prison in Minnesota, with up to 25 years for third-degree murder, but sentencing guidelines suggest that Chauvin would face 12 1/2 years in prison if convicted on either charge. Manslaughter has a maximum 10-year sentence.

Chauvin’s attorney, Eric Nelson, was expected to use his opening statement tell jurors that medical testimony and use of force experts will show a different view. Nelson has made clear that the defense will make an issue of Floyd swallowing drugs before his arrest, seeking to convince the jury that he was at least partially responsible for his death.

The county medical examiner’s autopsy noted fentanyl and methamphetamine in Floyd’s system, but listed his cause of death as “cardiopulmonary arrest, complicating law enforcement subdual, restraint, and neck compression.”

“This case to us is a slam dunk, because we know the video is the proof, it’s all you need,” Floyd’s brother Philonise said Monday on NBC’s “Today” show. “The guy was kneeling on my brother’s neck … a guy who was sworn in to protect. He killed my brother in broad daylight. That was a modern-day lynching.”

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Find AP’s full coverage of the death of George Floyd at: https://apnews.com/hub/death-of-george-floyd

By BUTCH DILL and ANILA YOGANATHAN

OHATCHEE, Ala. (AP) — Tornadoes and severe storms tore through the Deep South, killing at least five people as strong winds splintered trees, wrecked homes and downed power lines.

The tornado outbreak rolled into western Georgia early Friday. One large, dangerous tornado moved through Newnan and surrounding communities in the Atlanta metro area, meteorologists said.

A day earlier, a sheriff in eastern Alabama said a tornado cut a diagonal line through his county, striking mostly rural areas.

“Five people lost their lives and for those families, it will never be the same,” Calhoun County Sheriff Matthew Wade said at briefing Thursday evening.

Calhoun County Coroner Pat Brown on Friday identified the dead to Al.com as Joe Wayne Harris, 74, James William Geno, 72, Ebonique Harris, 28, Emily Myra Wilborn, 72, and Barbara Harris, 69.

One of the victims in the hard-hit town of Ohatchee in eastern Alabama, a small community of about 1,170 people, was Dwight Jennings’s neighbor. The 72-year-old Geno was known to his friends as J.W. and in his youth had been a rodeo bull rider. Geno could make anything out of wood, Jennings said, and he loved to catfish. The two of them had planned to go fishing this weekend, Jennings said. Jennings spent several hours searching for his friend’s dog before the animal was found alive, he said.

As many as eight tornadoes might have hit Alabama on Thursday, said John De Block, a meteorologist with the National Weather Service in Birmingham. Multiple twisters sprang from a “super cell” of storms that later moved into Georgia, he said.

Reports of tornado damage in the Newnan area began coming in shortly after midnight. Trees were toppled and power lines downed, knocking out service by the local utility.

Newnan police urged the public in a Facebook post to “get off the roads” while emergency officials surveyed the damage.

The bad weather stretched across the southern U.S., raising concerns of thunderstorms and flooding in parts of Tennessee, Kentucky and the Carolinas. In Tennessee, emergency responders hospitalized one person in Sumner County, and the Nashville Fire Department posted photos on Twitter showing large trees down, damaged homes and streets blocked by debris.

In Ohio, more than 100,000 people were without power early Friday after thunderstorms delivered 50 mph (80 kph) wind gusts to parts of the state. Forecasters reported peak gusts of 63 mph (100 kph) in Marysville.

Some school districts from Alabama to Ohio canceled or delayed class Friday due to damage and power outages.

Authorities said one tornado carved up the ground for more than an hour Thursday, traveling roughly 100 miles (160 kilometers) across Alabama. Vast areas of Shelby County near Birmingham — the state’s largest city — were badly damaged.

In the city of Pelham, James Dunaway said he initially ignored the tornado warning when it came over his phone. But then he heard the twister approaching, left the upstairs bedroom where he had been watching television and entered a hallway — just before the storm blew off the roof and sides of his house. His bedroom was left fully exposed.

“I’m very lucky to be alive,” Dunaway, 75, told Al.com.

Firefighters outside a flattened home in the Eagle Point subdivision, also in Shelby County, said the family that lived there made it out alive. Nearby homes were roofless or missing their second stories.

Farther west in the city of Centreville, south of Tuscaloosa, Cindy Smitherman and her family and neighbors huddled in their underground storm pit as a twister passed over their home.

A tree fell on the shelter door, trapping the eight inside for about 20 minutes until someone came with a chain saw to help free them, said Smitherman, 62. The twister downed trees, overturned cars and destroyed a workshop on the property.

“I’m just glad we’re alive,” she said.

Centreville Mayor Mike Oakley told ABC 33/40 news that a local airport was hit. “We have airplanes torn apart like toys. We’ve got homes along here that are totally destroyed, trees down, power lines down. It’s pretty devastating.”

First lady Jill Biden postponed a trip to Birmingham and Jasper, Alabama, that she had planned for Friday because of the severe weather, her office said.

“Thinking of everyone in Alabama and all of those impacted by the severe weather across the South tonight. My prayers are with the grieving families. Please stay safe,” Biden tweeted late Thursday.

Earlier, Alabama Gov. Kay Ivey issued an emergency declaration for 46 counties, and officials opened shelters in and around Birmingham.

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Yoganathan reported from New Orleans. Associated Press writers Kim Chandler in Montgomery, Alabama; Kevin McGill in New Orleans; Desiree Mathurin in Atlanta; Jeff Martin in Marietta, Georgia; and Rebecca Santana in New Orleans contributed to this report.