Mount Sinai Hospital in New York City is treating a possible Ebola patient who recently traveled to West Africa, hospital officials said, although he is "unlikely" to have the deadly virus. The patient arrived at the hospital’s emergency room early Monday morning with “a high fever and gastrointestinal symptoms,” according to a statement from the hospital. The patient has since been isolated and is undergoing diagnostic testing, officials said.

"All necessary steps are being taken to ensure the safety of all patients, visitors and staff,” the hospital said in a statement. “We will continue to work closely with federal, state and city health officials to address and monitor this case, keep the community informed and provide the best quality care to all of our patients."