Ebola outbreak: Get up to speed with the latest developmentsBy Saeed Ahmed, CNNUpdated 10:30 PM ET, Thu October 23, 2014Just WatchedFamily: Infected nurse is Ebola-freereplayMore Videos ...Family: Infected nurse is Ebola-free 01:43A doctor in New York tests positive for Ebola. An infected nurse shows signs of improvement. And a military response team begins training. With multiple developments underway, here's the latest on the Ebola outbreak:U.S. DEVELOPMENTSDoctor tests positiveA Doctors Without Borders physician who recently returned to New York from West Africa has tested positive for the Ebola virus, becoming the first diagnosed case in the city, a law enforcement official briefed on the matter told CNN.The doctor, identified by a law enforcement official as Craig Spencer, 33, arrived back in New York on October 17 after treating Ebola patients in Guinea, and developed a fever Thursday morning.Obama cautiously optimisticPresident Barack Obama is "cautiously more optimistic" that we may be turning the corner in the fight against Ebola. Two infected Americans are cured; Nigeria and Senegal are Ebola-free; and dozens of people who came in contact with now-deceased Ebola patient Thomas Eric Duncan didn't get the virus. "It gives you some sense that when it's caught early and where the public health infrastructure operates effectively, this outbreak can be stopped," he said.Photos: The Ebola epidemic 47 photosPhotos: The Ebola epidemic 47 photosThe Ebola epidemic – Red Cross workers, wearing protective suits, carry the body of a person who died from Ebola during a burial in Monrovia, Liberia, on Monday, January 5. Since the epidemic started a little more than a year ago in a remote village in Guinea, the world has seen more than 8,400 deaths, 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 47Photos: The Ebola epidemic 47 photosPauline Cafferkey, a Scottish woman diagnosed with Ebola, is put on a plane in Glasgow, Scotland, on Tuesday, December 30. Cafferkey, a 39-year-old nurse who volunteered in Sierra Leone, was being transported to London for treatment.Hide Caption 2 of 47Photos: The Ebola epidemic 47 photosLiberian President Ellen Johnson Sirleaf has her temperature taken before the opening of a new Ebola clinic Tuesday, November 25, in Monrovia.Hide Caption 3 of 47Photos: The Ebola epidemic 47 photosA child who survived the Ebola virus is fed by another survivor at a treatment center on the outskirts of Freetown, Sierra Leone, on Tuesday, November 11.Hide Caption 4 of 47Photos: The Ebola epidemic 47 photosHealth workers in Monrovia cover the body of a man suspected of dying from the Ebola virus on Friday, October 31.Hide Caption 5 of 47Photos: The Ebola epidemic 47 photosKaci Hickox leaves her home in Fort Kent, Maine, to take a bike ride with her boyfriend on Thursday, October 30. 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 6 of 47Photos: The Ebola epidemic 47 photosCrew members at an airport in Accra, Ghana, unload supplies sent from China on Wednesday, October 29.Hide Caption 7 of 47Photos: The Ebola epidemic 47 photosHealth officials in Nairobi, Kenya, prepare to screen passengers arriving at the Jomo Kenyatta International Airport on Tuesday, October 28.Hide Caption 8 of 47Photos: The Ebola epidemic 47 photosU.S. President Barack Obama hugs Ebola survivor Nina Pham in the Oval Office of the White House on Friday, October 24. 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 9 of 47Photos: The Ebola epidemic 47 photosHealth workers in Port Loko, Sierra Leone, transport the body of a person who is suspected to have died of Ebola on Tuesday, October 21.Hide Caption 10 of 47Photos: The Ebola epidemic 47 photosHealth workers bury a body on the outskirts of Monrovia on Monday, October 20.Hide Caption 11 of 47Photos: The Ebola epidemic 47 photosGarteh Korkoryah, center, is comforted during a memorial service for her son, Thomas Eric Duncan, on Saturday, October 18, 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 12 of 47Photos: The Ebola epidemic 47 photosBoys run from blowing dust as a U.S. military aircraft leaves the construction site of an Ebola treatment center in Tubmanburg, Liberia, on Wednesday, October 15.Hide Caption 13 of 47Photos: The Ebola epidemic 47 photosAid workers from the Liberian Medical Renaissance League stage an Ebola awareness event October 15 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 14 of 47Photos: The Ebola epidemic 47 photosEbola survivors prepare to leave a Doctors Without Borders treatment center after recovering from the virus in Paynesville, Liberia, on October 12.Hide Caption 15 of 47Photos: The Ebola epidemic 47 photosA woman crawls toward the body of her sister as a burial team takes her away for cremation Friday, October 10, 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 16 of 47Photos: The Ebola epidemic 47 photosA 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 Friday, October 3.Hide Caption 17 of 47Photos: The Ebola epidemic 47 photosA girl cries as community activists approach her outside her Monrovia home on Thursday, October 2, a day after her mother was taken to an Ebola ward.Hide Caption 18 of 47Photos: The Ebola epidemic 47 photosA health official uses a thermometer Monday, September 29, to screen a Ukrainian crew member on the deck of a cargo ship at the Apapa port in Lagos, Nigeria.Hide Caption 19 of 47Photos: The Ebola epidemic 47 photosWorkers move a building into place as part of a new Ebola treatment center in Monrovia on September 28.Hide Caption 20 of 47Photos: The Ebola epidemic 47 photosMedical staff members at the Doctors Without Borders facility in Monrovia burn clothes belonging to Ebola patients on Saturday, September 27. Hide Caption 21 of 47Photos: The Ebola epidemic 47 photosMedics load an Ebola patient onto a plane at Sierra Leone's Freetown-Lungi International Airport on Monday, September 22.Hide Caption 22 of 47Photos: The Ebola epidemic 47 photosA few people are seen in Freetown during a three-day nationwide lockdown on Sunday, September 21. In an attempt to curb the spread of the Ebola virus, people in Sierra Leone were told to stay in their homes.Hide Caption 23 of 47Photos: The Ebola epidemic 47 photosSupplies wait to be loaded onto an aircraft at New York's John F. Kennedy International Airport on Saturday, September 20. 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 24 of 47Photos: The Ebola epidemic 47 photosA child stops on a Monrovia street Friday, September 12, to look at a man who is suspected of suffering from Ebola.Hide Caption 25 of 47Photos: The Ebola epidemic 47 photosHealth workers in Monrovia place a corpse into a body bag on Thursday, September 4.Hide Caption 26 of 47Photos: The Ebola epidemic 47 photosAfter 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 Wednesday, September 3.Hide Caption 27 of 47Photos: The Ebola epidemic 47 photosCrowds cheer and celebrate in the streets Saturday, August 30, after Liberian authorities reopened the West Point slum in Monrovia. The military had been enforcing a quarantine on West Point, fearing a spread of the Ebola virus.Hide Caption 28 of 47Photos: The Ebola epidemic 47 photosA health worker wearing a protective suit conducts an Ebola prevention drill at the port in Monrovia on Friday, August 29. Hide Caption 29 of 47Photos: The Ebola epidemic 47 photosVolunteers working with the bodies of Ebola victims in Kenema, Sierra Leone, sterilize their uniforms on Sunday, August 24. Hide Caption 30 of 47Photos: The Ebola epidemic 47 photosA burial team from the Liberian Ministry of Health unloads bodies of Ebola victims onto a funeral pyre at a crematorium in Marshall, Liberia, on Friday, August 22.Hide Caption 31 of 47Photos: The Ebola epidemic 47 photosDr. Kent Brantly leaves Emory University Hospital on Thursday, August 21, 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 32 of 47Photos: The Ebola epidemic 47 photosAn Ebola Task Force soldier beats a local resident while enforcing a quarantine on the West Point slum on August 20.Hide Caption 33 of 47Photos: The Ebola epidemic 47 photosLocal residents gather around a very sick Saah Exco, 10, in a back alley of the West Point slum on Tuesday, August 19. 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 34 of 47Photos: The Ebola epidemic 47 photosA burial team wearing protective clothing retrieves the body of a 60-year-old Ebola victim from his home near Monrovia on Sunday, August 17. Hide Caption 35 of 47Photos: The Ebola epidemic 47 photosWorkers prepare the new Ebola treatment center on August 17.Hide Caption 36 of 47Photos: The Ebola epidemic 47 photosLiberian 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. 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 47Photos: The Ebola epidemic 47 photosA crowd enters the grounds of an Ebola isolation center in the West Point slum on August 16. The mob was reportedly shouting, "No Ebola in West Point."Hide Caption 38 of 47Photos: The Ebola epidemic 47 photosA health worker disinfects a corpse after a man died in a classroom being used as an Ebola isolation ward Friday, August 15, in Monrovia.Hide Caption 39 of 47Photos: The Ebola epidemic 47 photosHealth workers in Kenema screen people for the Ebola virus on Saturday, August 9, before they enter the Kenema Government Hospital.Hide Caption 40 of 47Photos: The Ebola epidemic 47 photosAid worker Nancy Writebol, wearing a protective suit, gets wheeled on a gurney into Emory University Hospital in Atlanta on August 5. 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 41 of 47Photos: The Ebola epidemic 47 photosMembers of Doctors Without Borders adjust tents in the isolation area in Kailahun on July 20.Hide Caption 42 of 47Photos: The Ebola epidemic 47 photosBoots dry in the Ebola treatment center in Kailahun on July 20.Hide Caption 43 of 47Photos: The Ebola epidemic 47 photosDr. Jose Rovira of the World Health Organization takes a swab from a suspected Ebola victim in Pendembu, Sierra Leone, on Friday, July 18.Hide Caption 44 of 47Photos: The Ebola epidemic 47 photosRed Cross volunteers disinfect each other with chlorine after removing the body of an Ebola victim from a house in Pendembu on July 18.Hide Caption 45 of 47Photos: The Ebola epidemic 47 photosA scientist separates blood cells from plasma cells to isolate any Ebola RNA and test for the virus Thursday, April 3, at the European Mobile Laboratory in Gueckedou, Guinea.Hide Caption 46 of 47Photos: The Ebola epidemic 47 photosHealth specialists work Monday, March 31, at an isolation ward for patients at the facility in southern Guinea.Hide Caption 47 of 47EXPAND GALLERYJust WatchedNew Ebola travel restrictions in U.S.replayMore Videos ...New Ebola travel restrictions in U.S. 02:16PLAY VIDEOJust WatchedA look inside Ebola patient's apartmentreplayMore Videos ...A look inside Ebola patient's apartment 01:16PLAY VIDEOJust WatchedCameraman 'Ebola free' in only two weeksreplayMore Videos ...Cameraman 'Ebola free' in only two weeks 01:17PLAY VIDEOJust WatchedWhat went wrong at Dallas hospital?replayMore Videos ...What went wrong at Dallas hospital? 04:26PLAY VIDEONurse Vinson to be transferred from isolationTexas nurse Amber Vinson, being treated for Ebola at Atlanta's Emory University Hospital, is steadily regaining her strength and her spirits are high, her family said. Doctors can no longer detect the virus in Vinson's body, and she'll be transferred from isolation, her mother said. Nurse Pham getting better The condition of Nina Pham, who, like Vinson, contracted Ebola after treating Duncan, has been upgraded from fair to good. Bentley the dog doing wellSamples from nurse Pham's dog Bentley tested negative for the virus. More specimens will be collected before the end of the 21-day quarantine.Go team begins trainingA 30-member U.S. military team that could be called on to respond to new cases of Ebola in the United States has begun specialized training at Fort Sam Houston in Texas. The weeklong training includes infection control and how to use the personal protective gear.Complete coverage on EbolaAFRICA DEVELOPMENTSThe rising tollA total of 9,911 confirmed or probable cases, and 4,868 deaths have been reported in Guinea, Sierra Leone and Liberia, the World Health Organization said Wednesday. Every district in Sierra Leone has reported at least one case. Mali's first confirmed caseA 2-year-old girl in Mali has been diagnosed with Ebola, making her the West African country's first confirmed case, health officials said Thursday. The girl was brought to Mali from neighboring Guinea, where the outbreak this year is believed to have started, World Health Organization spokeswoman Yvette Bivigou said.The girl, whose father died of Ebola, was taken to the hospital in Kayes after a nurse noticed she was suffering from what appeared to be Ebola-like symptoms. A test confirmed the girl has Ebola, Health Ministry spokeswoman Markatie Daou said. Three-week monitoring for some travelersAll travelers coming to the United States from Ebola-affected areas will be actively monitored for 21 days, starting Monday. Also, all U.S.-bound passengers from Liberia, Sierra Leone and Guinea must land in one of the five U.S. airports with enhanced screening for Ebola: New York's John F. Kennedy International, Washington Dulles, New Jersey's Newark Liberty International, Chicago's O'Hare International and Hartsfield-Jackson International in Atlanta. TravelIn a Thursday press conference, World Health Organization officials again stressed that it opposes a travel ban as a means of controlling the virus. Some in the United States and elsewhere have called for a blocking of those who attempt to enter the nation by air, while many in the scientific and medical community say doing so would make those with Ebola more difficult to track because they would attempt to cross borders by land. If the United States were to institute a travel ban, it would be unprecedented. Earlier, Belize's government issued a ban on citizens of affected West African countries. ASIA DEVELOPMENTSNo entry to North KoreaA pair of Beijing-based agencies that specialize in travel to North Korea say they've been told by their "partners in Pyongyang" that the nation won't allow international tourists to enter starting Friday, due to the threat of Ebola. It's not clear whether the restriction affects business travelers.Ebola outbreakHow the world reacted as Ebola spreadThe largest Ebola epidemic in history began with the simple act of caring for a child. Soon, it spread from the remote village in Guinea.Countries with travel restrictionsThe worst-ever outbreak of Ebola virus is stretching the medical capacities of Guinea, Liberia and Sierra Leone.Who is patient zero?Before the deaths soared into the thousands, before the outbreak triggered global fears, Ebola struck a toddler named Emile Ouamouno. The messy truth about EbolaWhat happens when you get Ebola? CNN's Miguel Marquez explains.Millions of vaccines planned by 2015 Health experts are fast-tracking tests for various vaccines, and hope to have millions of experimental doses by next year.How the Ebola virus spreadsEbola is a scary infectious disease but the first thing you should know is that it's not very contagious. Here is how it spreads.What you need to knowThese questions and answers will give you the latest information on the deadly virus and what's being done to stop its spread.3 with Ebola will fly each monthUp to three Ebola-infected travelers might board an international flight each month in West Africa, according to a new study, and potentially spread the deadly virus.Why some survive, some don'tThere's no cure for Ebola. So why have some patients walked away healthy while others in the West died? Inside the world's worst outbreakA doctor at a government-run Ebola treatment center in Monrovia is too busy to mince words.Stigmatized, abandoned orphansTwo children orphaned by Ebola play in the empty corner of a Liberian orphanage. Their parents died last month, and none of the extended family is willing to claim them. Five ways the CDC got it wrongPublic health experts are asking whether the CDC is partly to blame for problems with Ebola in the U.S. Here are 5 things they say the CDC is getting wrong.Can pets get or spread Ebola? The lack of solid protocol on what to do with Ebola victims' pets and what little is known about the risk has caused one dog to be euthanized and another quarantined. A look at Ebola protective gearRosie Tomkins takes a look at the protective suits that are worn by some Ebola medical workers in Africa.How hospitals handle Ebola patientsWhat's the protocol for health care workers if they suspect a patient has the virusEbola outbreak in West AfricaClick through our gallery as we track the Ebola outbreak in West Africa. Complete coverage on EbolaA look at CNN's complete coverage on the Ebola crisis. More from health5 things to know about measlesFather asks California school district to ban children who haven't been immunizedFit Nation 2015 team kick off in Atlanta
How the world reacted as Ebola spreadThe largest Ebola epidemic in history began with the simple act of caring for a child. Soon, it spread from the remote village in Guinea.
Countries with travel restrictionsThe worst-ever outbreak of Ebola virus is stretching the medical capacities of Guinea, Liberia and Sierra Leone.
Who is patient zero?Before the deaths soared into the thousands, before the outbreak triggered global fears, Ebola struck a toddler named Emile Ouamouno.
Millions of vaccines planned by 2015 Health experts are fast-tracking tests for various vaccines, and hope to have millions of experimental doses by next year.
How the Ebola virus spreadsEbola is a scary infectious disease but the first thing you should know is that it's not very contagious. Here is how it spreads.
What you need to knowThese questions and answers will give you the latest information on the deadly virus and what's being done to stop its spread.
3 with Ebola will fly each monthUp to three Ebola-infected travelers might board an international flight each month in West Africa, according to a new study, and potentially spread the deadly virus.
Why some survive, some don'tThere's no cure for Ebola. So why have some patients walked away healthy while others in the West died?
Inside the world's worst outbreakA doctor at a government-run Ebola treatment center in Monrovia is too busy to mince words.
Stigmatized, abandoned orphansTwo children orphaned by Ebola play in the empty corner of a Liberian orphanage. Their parents died last month, and none of the extended family is willing to claim them.
Five ways the CDC got it wrongPublic health experts are asking whether the CDC is partly to blame for problems with Ebola in the U.S. Here are 5 things they say the CDC is getting wrong.
Can pets get or spread Ebola? The lack of solid protocol on what to do with Ebola victims' pets and what little is known about the risk has caused one dog to be euthanized and another quarantined.
A look at Ebola protective gearRosie Tomkins takes a look at the protective suits that are worn by some Ebola medical workers in Africa.
How hospitals handle Ebola patientsWhat's the protocol for health care workers if they suspect a patient has the virus
Ebola outbreak in West AfricaClick through our gallery as we track the Ebola outbreak in West Africa.