Additionally, authorities say a 60-year-old who displayed fever symptoms and shortness of breath Sunday was hospitalized at Flushing Hospital Medical Center, and another person under 40 years old who spent time in mainland China arrived in the city on Thursday and called 911 on Friday after feeling symptoms.
Officials say that patient being tested did everything right, and that if the test is positive, they are ready to react to what would be the city's first confirmed case.
On Saturday morning, an ambulance brought that patient to Bellevue Hospital.
"The symptoms were fever, cough and a runny nose, like that simple," Health Commissioner Dr. Oxiris Barbot said. "And they did the right thing for everybody else by coming in and getting care."
RELATED: Coronavirus fear: New York City communities confront concerns
Mayor Bill de Blasio said the patient did "exactly as they should have" by following the guidelines that New York City put out.
Can you protect yourself from the coronavirus?
"Our radar's always set high, so we can screen these patients to stop it from affecting other people," said Patricia Tennill, of Bellevue Hospital.
RELATED: What is coronavirus?
Officials report the testing will take 36 to 48 hours and depends on CDC testing capacity.
The virus that started in the Wuhan section of China has now infected more than 17,000 people globally, killing at least 361. The U.S. has seen 11 confirmed cases so far, and New York is among 6 states looking into possible cases.
Governor Andrew Cuomo reported that at least 11 cases from New York have come back negative from the CDC.
"If it turns out to be a positive case, the Department of Health will do the work that it is well-known for in tracing back all substantial contacts the individual has had to ensure that anyone else who may have been affected gets the potential medical treatment they need," de Blasio said.
Officials declared a public health emergency -- which means turning away foreign nationals who have been to China in the past 14 days. For American citizens, there are potential quarantine sites at four military locations in the West.
Starting Sunday, all Americans returning to the U.S from China will be tested at seven ports of entry, including JFK Airport.
"If you yourself or anyone you know matches the criteria here, they have the symptoms, and they have a connection to travel to the affected areas of China, see a medical professional immediately," de Blasio said.
* Get Eyewitness News Delivered
* More New York City news
* Send us a news tip
* Download the abc7NY app for breaking news alerts
* Follow us on YouTube