Story highlights A potential Ebola patient is transferred to the University of Maryland Medical Center

CDC releases new guidelines for health care workers and others

A 5-year-old boy in New York tests negative for Ebola, health officials say

Kaci Hickox is released from New Jersey hospital after testing negative for Ebola

A nurse who was quarantined at a hospital in New Jersey after returning from West Africa was released Monday, her attorney said.

Kaci Hickox, who told CNN the quarantine was violating her rights, was discharged after testing negative for Ebola.

Also on Monday, a 5-year-old boy who recently visited West Africa and had a fever tested negative for the virus in New York, according to health officials.

The boy, who was running a temperature,was with his mother at New York's Bellevue Hospital Center, said Dr. Ram Raju, president of the New York City Health and Hospitals Corp., which oversees Bellevue.

Nurse to return to Maine

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Photos: The Ebola epidemic Photos: The Ebola epidemic An Ebola survivor participates in a study in Monrovia, Liberia, on June 17, 2015. The country launched a five-year study to unravel the mystery of the long-term health effects that plague survivors of the viral disease. Since the epidemic started more than a year ago in a remote village in Guinea, more than 11,000 people have died, the vast majority in three West African nations, according to the latest numbers from the World Health Organization . And that number is believed to be low, since there was widespread under-reporting of cases, according to WHO. Hide Caption 1 of 45 Photos: The Ebola epidemic Women in Monrovia celebrate after the World Health Organization declared Liberia Ebola-free on May 9, 2015. Other cases have recurred since, however. Two people in Liberia have died of the disease since the end of June, just weeks after the WHO declared the nation free of the disease. Hide Caption 2 of 45 Photos: The Ebola epidemic A man walks past an Ebola awareness painting in Monrovia on March 22, 2015. Hide Caption 3 of 45 Photos: The Ebola epidemic Soldiers from the U.S. Army's 101st Airborne Division walk across the tarmac at Campbell Army Airfield before reuniting with their families at a homecoming ceremony March 21, 2015 in Fort Campbell, Kentucky. The 162 soldiers were deployed in Liberia, where they helped fight the spread of Ebola. Hide Caption 4 of 45 Photos: The Ebola epidemic Relatives weep for a loved one who it was believed died from Ebola, at a graveyard on the outskirts of Monrovia on March 11, 2015. Hide Caption 5 of 45 Photos: The Ebola epidemic Doctors Without Borders staffer Alex Eilert Paulsen watches as mattresses and bed frames burn at the Ebola Treatment Unit in Paynesville, Liberia, on January 31, 2015. The organization reduced its number of beds from 250 to 30 as gains were made in battling the virus. Hide Caption 6 of 45 Photos: The Ebola epidemic Pauline Cafferkey, a Scottish woman diagnosed with Ebola, is put on a plane in Glasgow, Scotland, on December 30, 2014. Cafferkey, a 39-year-old nurse who volunteered in Sierra Leone, was being transported to London for treatment. Hide Caption 7 of 45 Photos: The Ebola epidemic A child who survived the Ebola virus is fed by another survivor at a treatment center on the outskirts of Freetown, Sierra Leone, on November 11, 2014. Hide Caption 8 of 45 Photos: The Ebola epidemic Health workers in Monrovia cover the body of a man suspected of dying from the Ebola virus on October 31, 2014. Hide Caption 9 of 45 Photos: The Ebola epidemic Kaci Hickox leaves her home in Fort Kent, Maine, to take a bike ride with her boyfriend on October 30, 2014. Hickox, a nurse, recently returned to the United States from West Africa, where she treated Ebola victims. State authorities wanted her to avoid public places for 21 days -- the virus' incubation period. But Hickox, who twice tested negative for Ebola, said she would defy efforts to keep her quarantined at home. Hide Caption 10 of 45 Photos: The Ebola epidemic Health officials in Nairobi, Kenya, prepare to screen passengers arriving at the Jomo Kenyatta International Airport on October 28, 2014. Hide Caption 11 of 45 Photos: The Ebola epidemic U.S. President Barack Obama hugs Ebola survivor Nina Pham in the Oval Office of the White House on October 24, 2014. Pham, one of two Dallas nurses diagnosed with the virus, was declared Ebola-free after being treated at a hospital in Bethesda, Maryland. The other nurse, Amber Vinson (not pictured), was treated in Atlanta and also declared Ebola-free. Hide Caption 12 of 45 Photos: The Ebola epidemic Health workers in Port Loko, Sierra Leone, transport the body of a person who is suspected to have died of Ebola on October 21, 2014. Hide Caption 13 of 45 Photos: The Ebola epidemic Health workers bury a body on the outskirts of Monrovia on October 20, 2014. Hide Caption 14 of 45 Photos: The Ebola epidemic Garteh Korkoryah, center, is comforted during a memorial service for her son, Thomas Eric Duncan, on October 18, 2014, in Salisbury, North Carolina. Duncan, a 42-year-old Liberian citizen, died October 8 in a Dallas hospital. He was in the country to visit his son and his son's mother, and he was the first person in the United States to be diagnosed with Ebola. Hide Caption 15 of 45 Photos: The Ebola epidemic Boys run from blowing dust as a U.S. military aircraft leaves the construction site of an Ebola treatment center in Tubmanburg, Liberia, on October 15, 2014. Hide Caption 16 of 45 Photos: The Ebola epidemic Aid workers from the Liberian Medical Renaissance League stage an Ebola awareness event October 15, 2014, in Monrovia. The group performs street dramas throughout Monrovia to educate the public on Ebola symptoms and how to handle people who are infected with the virus. Hide Caption 17 of 45 Photos: The Ebola epidemic Ebola survivors prepare to leave a Doctors Without Borders treatment center after recovering from the virus in Paynesville, Liberia, on October 12, 2014. Hide Caption 18 of 45 Photos: The Ebola epidemic A man dressed in protective clothing treats the front porch of a Dallas apartment on October 12, 2014. The apartment is home to one of the two nurses who were diagnosed with Ebola after treating Thomas Eric Duncan, a Liberian national who traveled to Dallas and later died from the virus. Hide Caption 19 of 45 Photos: The Ebola epidemic A woman crawls toward the body of her sister as a burial team takes her away for cremation October 10, 2014, in Monrovia. The sister had died from Ebola earlier in the morning while trying to walk to a treatment center, according to her relatives. Hide Caption 20 of 45 Photos: The Ebola epidemic A man digs a grave on October 7, 2014, outside an Ebola treatment center near Gbarnga, Liberia. Hide Caption 21 of 45 Photos: The Ebola epidemic A person peeks out from the Dallas apartment where Thomas Eric Duncan, the first person diagnosed with the Ebola virus in the United States, was staying on October 3, 2014. Hide Caption 22 of 45 Photos: The Ebola epidemic A girl cries as community activists approach her outside her Monrovia home on October 2, 2014, a day after her mother was taken to an Ebola ward. Hide Caption 23 of 45 Photos: The Ebola epidemic A health official uses a thermometer September 29, 2014, to screen a Ukrainian crew member on the deck of a cargo ship at the Apapa port in Lagos, Nigeria. Hide Caption 24 of 45 Photos: The Ebola epidemic Workers move a building into place as part of a new Ebola treatment center in Monrovia on September 28, 2014. Hide Caption 25 of 45 Photos: The Ebola epidemic Medics load an Ebola patient onto a plane at Sierra Leone's Freetown-Lungi International Airport on September 22, 2014. Hide Caption 26 of 45 Photos: The Ebola epidemic A few people are seen in Freetown during a three-day nationwide lockdown on September 21, 2014. In an attempt to curb the spread of the Ebola virus, people in Sierra Leone were told to stay in their homes. Hide Caption 27 of 45 Photos: The Ebola epidemic Supplies wait to be loaded onto an aircraft at New York's John F. Kennedy International Airport on September 20, 2014. It was the largest single shipment of aid to the Ebola zone to date, and it was coordinated by the Clinton Global Initiative and other U.S. aid organizations. Hide Caption 28 of 45 Photos: The Ebola epidemic A child stops on a Monrovia street September 12, 2014, to look at a man who is suspected of suffering from Ebola. Hide Caption 29 of 45 Photos: The Ebola epidemic After an Ebola case was confirmed in Senegal, people load cars with household items as they prepare to cross into Guinea from the border town of Diaobe, Senegal, on September 3, 2014. Hide Caption 30 of 45 Photos: The Ebola epidemic A health worker wearing a protective suit conducts an Ebola prevention drill at the port in Monrovia on August 29, 2014. Hide Caption 31 of 45 Photos: The Ebola epidemic A burial team from the Liberian Ministry of Health unloads bodies of Ebola victims onto a funeral pyre at a crematorium in Marshall, Liberia, on August 22, 2014. Hide Caption 32 of 45 Photos: The Ebola epidemic Dr. Kent Brantly leaves Emory University Hospital on August 21, 2014, after being declared no longer infectious from the Ebola virus. Brantly was one of two American missionaries brought to Emory for treatment of the deadly virus. Hide Caption 33 of 45 Photos: The Ebola epidemic An Ebola Task Force soldier beats a local resident while enforcing a quarantine on the West Point slum on August 20, 2014. Hide Caption 34 of 45 Photos: The Ebola epidemic Local residents gather around a very sick Saah Exco, 10, in a back alley of the West Point slum on August 19, 2014. The boy was one of the patients that was pulled out of a holding center for suspected Ebola patients after the facility was overrun and closed by a mob on August 16. A local clinic then refused to treat Saah, according to residents, because of the danger of infection. Although he was never tested for Ebola, Saah's mother and brother died in the holding center. Hide Caption 35 of 45 Photos: The Ebola epidemic Workers prepare the new Ebola treatment center on August 17, 2014. Hide Caption 36 of 45 Photos: The Ebola epidemic Liberian police depart after firing shots in the air while trying to protect an Ebola burial team in the West Point slum of Monrovia on August 16, 2014. A crowd of several hundred local residents reportedly drove away the burial team and their police escort. The mob then forced open an Ebola isolation ward and took patients out, saying the Ebola epidemic is a hoax. Hide Caption 37 of 45 Photos: The Ebola epidemic A health worker disinfects a corpse after a man died in a classroom being used as an Ebola isolation ward August 15, 2014, in Monrovia. Hide Caption 38 of 45 Photos: The Ebola epidemic Aid worker Nancy Writebol, wearing a protective suit, gets wheeled on a gurney into Emory University Hospital in Atlanta on August 5, 2014. A medical plane flew Writebol from Liberia to the United States after she and her colleague Dr. Kent Brantly were infected with the Ebola virus in the West African country. Hide Caption 39 of 45 Photos: The Ebola epidemic Members of Doctors Without Borders adjust tents in the isolation area in Kailahun on July 20, 2014. Hide Caption 40 of 45 Photos: The Ebola epidemic Boots dry in the Ebola treatment center in Kailahun on July 20, 2014. Hide Caption 41 of 45 Photos: The Ebola epidemic Dr. Jose Rovira of the World Health Organization takes a swab from a suspected Ebola victim in Pendembu, Sierra Leone, on July 18, 2014. Hide Caption 42 of 45 Photos: The Ebola epidemic Red Cross volunteers disinfect each other with chlorine after removing the body of an Ebola victim from a house in Pendembu on July 18, 2014. Hide Caption 43 of 45 Photos: The Ebola epidemic A scientist separates blood cells from plasma cells to isolate any Ebola RNA and test for the virus April 3, 2014, at the European Mobile Laboratory in Gueckedou, Guinea. Hide Caption 44 of 45 Photos: The Ebola epidemic Health specialists work March 31, 2014, at an isolation ward for patients at the facility in southern Guinea. Hide Caption 45 of 45

Hickox was put in isolation Friday after returning to New Jersey from a month in Sierra Leone.

Her quarantine, part of a days-old policy the governors of New York and New Jersey instituted for all health care workers who've had contact with Ebola patients in West Africa, has been criticized widely by health care experts.

On Sunday, she spoke by phone with CNN's Candy Crowley and Elizabeth Cohen.

"This is an extreme that is really unacceptable, and I feel like my basic human rights have been violated," Hickox said. She said she was flummoxed as to how New Jersey Gov. Chris Christie, who has no medical training, could describe her as "obviously ill."

Hickox will return to Maine, and arrangements for her travel are still being worked out, her attorney, Stephen Hyman, told CNN.

Hyman said there's a "legal basis" to challenge the quarantine policies in New Jersey and in New York, but the nurse isn't sure she wants to do so.

Each state has a different quarantine law, said Steven Gravely, an attorney who helped rewrite Virginia's quarantine law so the state could more easily respond to outbreaks.

The U.S. Constitution gives states authority over how to approach health matters, though the federal government has control over what happens concerning public health in airports and shipping ports, Gravely said.

CDC issues new guidelines

On Monday, the U.S. Centers for Disease Control and Prevention released updated guidance for people who might have been exposed to the Ebola virus.

"The new guidelines increase the level of protection by outlining different levels of exposure and outlining different public health actions that can be taken for each of those levels of exposure," CDC Director Dr. Tom Frieden told reporters.

Someone who had direct contact of infected body fluids, for instance, would be classified as high risk. Someone would be considered low risk if she traveled on an airplane with a person showing symptoms of Ebola.

Frieden has long argued against travel restrictions, saying they could hurt the global health community's effort to tamp down the West Africa outbreak.

"We're far from out of the woods. In each of the three heavily affected countries in West Africa, we're seeing definite signs of progress, but still be a long hard fight," he said.

What states are doing

The director of the CDC said that active 21-day monitoring began Monday in the six states where about 70% of air travelers enter the United States from Liberia, Guinea and Sierra Leone, hard-hit countries in West Africa. Those states are New York, Pennsylvania, Maryland, Virginia, New Jersey and Georgia.

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The three-week period marks the maximum incubation time for Ebola

State and local officials will maintain daily contact with all travelers from the three affected countries for the entire 21 days after the last possible date of exposure to Ebola virus, Frieden said.

Authorities will require travelers to report their temperatures and the presence or absence of Ebola symptoms aside from a fever, he explained, and they will be required to coordinate with public health officials if they intend to travel and to make arrangements to have their temperatures monitored during travel in a manner acceptable to state and local health officials.

New York, New Jersey and Illinois say anyone returning from having direct contact with Ebola patients in West Africa will have to be quarantined for 21 days.

Maryland officials will monitor the health of all travelers returning from Liberia, Sierra Leone and Guinea, Gov. Martin O'Malley's office said. The effort will build on state and local health departments' outreach and monitoring, according to a statement that explains more about the process. Illinois Gov. Pat Quinn's office said the quarantine would be a "home quarantine."

"This protective measure is too important to be voluntary," Quinn said.

On Friday, Cuomo and Christie announced a mandatory quarantine for people who had been in West Africa and had contact there with people infected with Ebola. Christie said such returning health care workers who are New Jersey residents could be quarantinefd in their homes as long as they did not have symptoms consistent with Ebola.

Christie said Monday that he was glad that Hickox had been released from quarantine.

"The reason she was put in the hospital in the first place was because she was running a high fever and was symptomatic. If you live in New Jersey, you're quarantined in your home. That's always been the policy. If you live outside the state, and you're symptomatic, we're not letting you go onto public transportation. It makes no common sense. The minute she was no longer symptomatic, she was released."

Virginia is implementing an "active monitoring program" for all returning passengers from Guinea, Liberia and Sierra Leone, "with a special emphasis on returning health care workers," Virginia governor's spokesman Brian Coy has said.

Could quarantines backfire?

Arguments against the quarantines are that they could deter health care workers from traveling to West Africa to fight Ebola and could greatly hurt their livelihoods.

"I'm concerned of the disincentive for the health care workers" to travel to West Africa, said Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases at the National Institutes of Health.

"If I lose three weeks on my return and don't get to do the work I'm supposed to do ... means this wouldn't be workable for me," said Dr. John Carlson, a pediatric immunologist at Tulane University.

An expert who has studied Ebola for more than a decade, Purdue University's David Sanders, told CNN on Monday that he feels the policy on mandatory quarantines in New York and New Jersey are "largely political" rather than medical fact and that leaders are acting based on the desire to calm a panicked public rather than to do what's most beneficial.

Doctors Without Borders was even more direct.

"Forced quarantine of asymptomatic health workers returning from fighting the Ebola outbreak in West Africa is not grounded on scientific evidence and could undermine efforts to curb the epidemic at its source," the group said.

Samantha Power, U.S. ambassador to the United Nations, is traveling in Ebola-affected nations in West Africa.

"Ambassador Power and the traveling party were obviously aware of the discussions of potential quarantines by state and local officials prior to departure and will, of course, be prepared to abide by requirements upon return.

"That said, they are also in close contact with the CDC, with medical experts and are taking absolutely every precaution to stay safe and to avoid contracting the disease, a risk that pales in comparison to the risk we take if the international community does not take further action," said Jen Psaki, spokeswoman for the State Department.

Doctor with Ebola at Bellevue

Bellevue Hospital Center is also where Ebola-positive New York doctor Craig Spencer, 33, is in isolation. He is in serious but stable condition Monday, according to Raju.

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Spencer arrived home in the United States on October 17 after spending time in Guinea.

Because he'd had contact with Ebola patients, Spencer took pains to limit his interaction with others, but he did go places and spend time with friends.

Spencer's fiancee, Morgan Dixon, had been under quarantine at Bellevue, but doctors said she did not have the virus and has no symptoms, said Jean Weinberg, the city Health Department spokeswoman.

"We learned a lot from Dallas," Raju said, referring to all that went wrong in Texas when a Liberian national arrived from West Africa with Ebola and two nurses treating him contracted the virus.

According to a hospital worker with direct knowledge of the situation, there were not enough nurses on staff at Bellevue to handle both ICU and Ebola patients, so patients in the adult and pediatric ICU were transferred to NYU Langone Medical Center for further treatment.

Pediatric patients were transferred Monday, while the adult patients were transferred over the weekend.

They needed the nurses, not the space, the worker said.

Elsewhere, a potential Ebola patient was transferred to the University of Maryland Medical Center in Baltimore.

"They are appropriately isolated and receiving further assessment and care," the hospital tweeted on Monday.

Ebola and the U.S. military

On Sunday, the Pentagon would not say whether it's willing to still send an active-duty military Ebola response team to states ordering mandatory quarantine for Ebola health care workers.

The 30-person team finishes training Monday and will then be ready for deployment on 72 hours' notice. Defense Secretary Chuck Hagel would have to approve any deployment.

On Monday, CNN learned from military officials that Army Maj. Gen. Darryl A. Williams, who's commander of U.S. Army Africa, and about 10 other personnel are now in "controlled monitoring" in Italy after landing there following a West Africa trip over the weekend.

Italian authorities met Williams' plane "in full CDC gear," an official said, referring to the type of protective equipment health care workers wear when dealing with Ebola.

There is no indication that any team members have the virus.

They will be monitored for 21 days at a separate location at a U.S. military installation in Vicenza, Italy, according to military officials. It's not yet clear if family members can visit them.

"The Army Chief of Staff has directed a 21-day controlled monitoring period for all redeploying soldiers returning from Operation United Assistance. He has done this out of caution to ensure soldiers, family members and their surrounding communities including host nations are confident that we are taking all steps necessary to protect their health," the Army said in a statement.