ORANGE COUNTY, Fla. -- Eyewitness News found out Monday that the Orange County hotel at the center of a possible Legionnaires' outbreak is not telling customers about the potential risk. Two former guests at the Quality Inn and Suites recently came down with the disease and Eyewitness News has discovered there could be at least two more victims.

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LEGIONNAIRES' DISEASE: Details From Centers For Disease Control
MAP SHOWING HOTEL: Link To Satellite Map Of Quality Inn

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Eyewitness News sent a crew in undercover to see what guests are being told about the hotel currently being tested for Legionnaires' disease. A TV crew rented a room to find out if they would disclose the investigation. They did, but only when asked.

Three days after voluntarily closing, Eyewitness News sent a crew inside to find out what's being said to those arriving for vacation stays. The disclosure, while not legally required, was vague and only happened when the crew said they'd heard of some trouble.

On Friday, guests were asked to leave after two Canadian guests were hospitalized with a disease best known for sweeping through an American Legions convention in the 70s, killing 34 people. The Health Department checked many rooms over the weekend and found potential areas where bacteria could grow in almost every room.

"Legionnella actually requires a water source to become aerosolized and, in each of these rooms, we found a standing water source, which caused us some concern," explained David Overfield, Orange County Health Department.

The A/C units causing the standing water were fixed and cleaned and hotel managers decided it's safe to rent them.

If the county confirms the hotel as the source of Legionnella, it could be forced to shut down. Until then, any closures are voluntary and, as guests check in, staffers are saying little about risks to new guests.

There are at least two other guests who are sick, but it's not been determined definitively that they do or do not have Legionnaires' and the Health Department is relying on the hotel to contact all of its former guests to find out if any are sick or have symptoms.

Legionnaires' disease is named after an outbreak of pneumonia that struck attendees of a convention of the American Legion in Philadelphia in July 1976.

According to the Centers for Disease Control, "Legionnaires' disease can have symptoms like many other forms of pneumonia, so it can be hard to diagnose at first. Signs of the disease can include: a high fever, chills, and a cough. Some people may also suffer from muscle aches and headaches. Chest X-rays are needed to find the pneumonia caused by the bacteria, and other tests can be done on sputum (phlegm), as well as blood or urine to find evidence of the bacteria in the body. These symptoms usually begin 2 to 14 days after being exposed to the bacteria. Legionnaires' disease can be very serious and can cause death in up to 5% to 30% of cases. Most cases can be treated successfully with antibiotics, and healthy people usually recover from infection."