More than two dozens of patients suspected to have had contracted Ebola were isolated in New York city hospitals, it was revealed Thursday.

"In the last two months we've had over 25 patients who have been held on suspicion that they had Ebola, but none of them turned out to have it. That's just in the 11 hospitals that make up the New York City public hospital system, but then there are a lot of other hospitals in New York," said Ian Michaels, a spokesman for the New York City Health and Hospitals Corporation (HHC New York) in a phone interview with International Business Times.

"Over the last two months we've had, I believe, 27 patients isolated on suspicion of Ebola, but none of them had it," Michaels added.

One man was taken to Bellevue Hospital on Wednesday after he allegedly exhibited Ebola-like symptoms, reported the New York Post. The 31-year-old Ebola suspect claimed he had recently visited Nigeria but was later on cleared by doctors, added the outlet.

Bellevue Hospital will be the "default" hospital for suspected Ebola patients coming off from John F. Kennedy International Airport, said CBS New York. On Wednesday, the hospital tested Ebola readiness through fake Ebola patients.

HHC New York Chief Medical Officer Ross Wilson claims that the city is ready for the deadly virus.

"We are prepared," Wilson said, as quoted by CBS New York. "We have both the personnel, the equipment and the expertise to manage."

The assurance, however, isn't enough for airline cleanup crews in the city. According to a Reuters report, an estimated 200 airline cabin cleaners "walked off the job at New York's LaGuardia Airport on Thursday."

The workers, which included non-unionized Air Serv cleaners, reportedly fear exposure to Ebola, said the Reuters report. "Some signs read 'Air Serv exposes us to vomit, blood and feces without protection' and 'Air Serv puts worker safety at risk.'"

The U.S. government earlier announced additional preventive measure against the dreaded virus. Airline passengers coming from West Africa will undergo "tighter screening" procedures. However, the new mandate will not be applicable at LaGuardia.

Ebola virus spreads through "direct contact with the blood, body fluids and tissues of infected animals or people," said the World Health Organization. There are currently several vaccines under development to counter the deadly virus.

See the symptoms of Ebola virus disease as well as prevention and control tips here.