A doctor who recently returned from Guinea has tested positive for Ebola -- the first case of the deadly virus in New York City and the fourth diagnosed in the United States . Here is a timeline of Craig Spencer 's movements since he got back from the West African nation : . When did he return from Guinea ? Spencer came back to the United States last week after treating Ebola patients in Guinea , where he worked for Doctors Without Borders . He completed his work in Guinea on October 12 and left the country two days later via Brussels , Belgium . He arrived at John F. Kennedy International Airport on October 17 , but he exhibited no symptoms of the virus until Thursday morning , said Dr. Mary Travis Bassett , New York City 's health commissioner . The physician , who works at Columbia Presbyterian Hospital , was checking his temperature twice a day . He has not seen any patients since his return . Did he have any symptoms ? The 33-year-old did not have any symptoms just after his return , but he developed a fever , nausea , pain and fatigue Thursday morning , authorities said . He began feeling sluggish a couple of days ago , but his fever spiked to 100.3 degrees Fahrenheit ( about 38 Celsius ) the day his symptoms appeared . How many people has he been in contact with ? Spencer was in contact with a few people after he started exhibiting symptoms . Ebola is n't contagious until someone has symptoms . Three people -- his fiancée and two friends -- are being placed on quarantine and monitored , health officials said . `` They are all well at this time ; none of them is sick , '' Bassett said . What places did he visit ? Spencer started feeling fatigued Tuesday , though without a fever , officials said . That day , he visited a coffee stand and a meatball restaurant in Manhattan . The next day , he ran for 3 miles in his neighborhood , and took the subway to a bowling alley in Brooklyn . He was n't symptomatic until Thursday , when he had a low-grade fever , officials said . The bowling alley closed Thursday and its bar was cleaned and sanitized as a precaution , it said . Both the coffee stand and the bowling alley were assessed and cleared by health officials while the restaurant was expected to reopen Friday evening . Spencer also traveled on three subway lines . `` At the time that the doctor was on the subway , he did not have fever ... he was not symptomatic , '' Bassett said . Chances of anyone contracting the virus from contact with him are `` close to nil , '' she said . Is the hospital equipped to handle Ebola cases ? Spencer is at New York 's Bellevue Hospital Center , where he has been in isolation since emergency personnel took him there . It 's one of eight hospitals statewide designated by Cuomo as part of an Ebola preparedness plan . `` We are as ready as one could be , '' Cuomo said . His state will be different from Texas , he said , where a Liberian man was diagnosed with Ebola and two nurses who treated him later contracted the virus . The man , Thomas Eric Duncan , died October 8 . `` We had the advantage of learning from the Dallas experience , '' he said . CDC issues new hospital guidance for Ebola . How will his case be different from Duncan 's ? Duncan , who had flown from Liberia to Dallas , was the first person diagnosed with Ebola in the United States . Two nurses who helped care for him also got infected , raising concerns about the nation 's ability to deal with an outbreak . One of the Dallas nurses , Nina Pham , has been declared free of the Ebola virus while another one , Amber Vinson , is still hospitalized . New York Mayor Bill de Blasio said his city followed every protocol in its handling of Spencer 's case . For starters , Spencer was admitted to a hospital as soon as he developed symptoms , unlike Duncan , who was sent home with antibiotics the first time he went to Texas Presbyterian Hospital . Duncan returned days later and was hospitalized . The Centers for Disease Control and Prevention has dispatched a team to New York to help with the case . `` We want to state at the outset there is no reason for New Yorkers to be alarmed , '' the mayor said . 5 things nurses say the Texas hospital got wrong . What about his neighbors ? Spencer 's Manhattan apartment has been isolated and locked . City health department workers canvassed the neighborhood , distributing information about Ebola and slipping fliers under doors , said Eugene Upshaw , who lives in Spencer 's building . The handbills , which read `` Ebola : Am I at risk ? '' explain the virus , its symptoms and how you can get it . `` What we 're doing now is just telling the folks who live here in the neighborhood that they 're safe . It 's safe for them to be in their buildings , it 's safe for them to go to their apartments , it 's safe for them to walk down the street , '' said Sam Miller , associate commissioner of the New York City Department of Health and Mental Hygiene . Ebola is spread by direct contact with the bodily fluids of an infected person . The outbreak has killed nearly 5,000 people , mostly in Liberia , Sierra Leone and Guinea . How many Ebola cases have been diagnosed in the U.S. ? Spencer is the fourth person diagnosed with Ebola in the United States . After Duncan , who was infected in his native Liberia before being diagnosed in Dallas , two nurses treating him later tested positive . Latest Ebola developments . Have there been other cases involving Americans ? Yes . Five other Americans have been diagnosed with Ebola in West Africa and later transferred to the U.S. for treatment . They were treated and discharged from hospitals in Atlanta and Omaha , Nebraska . An additional American died of Ebola in July after traveling to Nigeria from Liberia .
Craig Spencer , 33 , came back to the United States last week . The doctor did not have any symptoms until Thursday , health officials say . New York Gov . Andrew Cuomo : `` We are as ready as one could be ''