The governors of New York and New Jersey announcing a mandatory quarantine for anyone returning from the Ebola zone in West Africa who had direct contact with an Ebola patient.
Dr. Craig Spencer, the first person diagnosed with Ebola in New York City is now in stable condition. And his fiancée and two other friends are all under quarantine.
Officials are now tracing all of Spencer's movements since he returned from treating Ebola patients in Guinea.
Jason Carroll is OutFront with the report.
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.
The doctor, identified as Craig Spencer, 33, came back from treating Ebola patients in Guinea on October 17 and developed a fever, nausea, pain and fatigue Thursday. He is isolated in stable condition at New York's Bellevue Hospital Center, one of the eight hospitals statewide that New York Gov.
Spencer, who is in intensive care, went for a jog, may have gone to a restaurant, traveled the city's subway system and went bowling before feeling ill, but authorities sought to assure an anxious public that the likelihood of him spreading the virus was low.
"We want to state at the outset there is no reason for New Yorkers to be alarmed," Mayor Bill de Blasio told reporters late Thursday.
There's no question Spencer was heroic - he traveled to west Africa to treat Ebola patients. But many people are outraged that he traveled around the most populated city in America when he was feeling "sluggish."
As a doctor, should he have known better?
Miguel Marquez has the report.
A case of Ebola has made its way to New York City.
A 33-year-old American physician who returned from working in the Ebola hot zone in West Africa about 10 days ago is now in isolation at Manhattan's Bellevue Hospital.
He was rushed to the hospital Thursday morning with a 103-degree fever, nausea, pain and fatigue. Of major concern: an official tells CNN the doctor was out in public last night, taking an Uber cab to a bowling alley in Brooklyn.
The doctor appears to have followed CDC guidelines, which state travelers from West Africa self-monitor for Ebola symptoms, but in this case, after directly treating Ebola patients, should he have been forced to self-quarantine?
The case raises further questions about whether the U.S. is doing enough to stamp out epidemics. Can the U.S., for instance, learn anything from China's draconian measures?
David McKenzie is OutFront in Beijing.
CNN has learned the gunman responsible terrorizing the Canadian capital Wednesday, shooting and killing a soldier, had ties to jihadists.
Michael Zehaf-Bibeau's terror connections appear to have been online. Officials say he used social media to communicate with at least one other extremist who went overseas to fight in Syria.
In light of the Ottawa shooting, CNN's Tom Foreman explores the dangers posed by lone wolf attacks.
Some are hailing it as instant karma - a bus driver bagged a purse-snatcher with a bat. And it was all caught on camera. CNN's Jeanne Moos reports.