A Doctors Without Borders physician is the first person to be diagnosed with Ebola in New York.

Panic spread through the crowded city since the physician, Dr. Craig Spencer, 33, traveled throughout the city before his diagnoses was confirmed. He took public transportation, ate at a shop and went bowling among many things since his return to the U.S.

On Oct. 17, Craig flew to New York from Guinea via Europe from his trip with Doctors without Borders to help combat the Ebola crisis.

Thursday, nearly a week since his return, he started showing symptoms of the virus. He had a 100.3 degree fever, and developed nausea, pain and fatigue.

Since his diagnosis, he has been isolated for treatment in Brooklyn's Bellevue Hospital. New York Gov. Andrew Cuomo designated Bellevue along with seven other New York hospitals, with an Ebola preparedness plan.

Authorities on Friday urged the public to not worry too much about the Ebola case. They say the odds of the virus spreading through New York are extremely low.

"The MTA New York City Subway system is safe to ride. ... [It] has existing protocols for cleaning potentially infectious waste such as bodily fluids from anywhere in the mass transit network," the Metropolitan Transportation Authority said in a statement.

Mayor of New York City Bill de Blasio told New Yorkers, "There is no cause for alarm. Ebola is an extremely hard disease to contract."

Although Spencer traveled throughout the city for a week, he had not shown any symptoms which mean it is unlikely that the virus was passed to someone else in the public.

The Ebola epidemic broke out in Liberia, Guinea and Sierre Leone. It is spread through contact from others with the virus through feces, saliva, spit and other bodily fluids.