BALTIMORE (WJZ) — MDTA announced Tuesday that two of its employees came down with what’s known as Legionnaires’ Disease, and as a precaution shut down its administration building and also some of its tolls while it works to find out where the disease started.

If your regular route takes you through the I-895 Baltimore Harbor Tunnel toll booth, depending on the time of day, there may be a little more traffic.

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“It’s reservoirs in water. So, if water droplets like misters or steamers or cool water mist, those droplets of water will carry the bacteria and you’ll inhale it,” said Dr. Neil Roy, chairman of ER at Sinai Hospital.

Dr. Roy said the symptoms of Legionnaires’ are very much like the flu.

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“So, the concern now and I believe, where did the reservoir of the Legionella come from,” Dr. Roy said.

MDTA said they’re not sure whether the bacteria is actually inside the building. But for the safety of its employees and visitors it decided to close the facility while they do a series of tests and inspections.

“I hope they’re able to track it down and contain it quickly,” said driver Mary Davisson.

The Maryland Transit Authority wants drivers to know cash lanes are now automated, and to just keep moving through the toll without stopping and a statement will be sent to you.

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Those two employees are being treated for the disease and are expected to be fine. Dr. Roy said this is a bacteria that is easily treatable with a common antibiotic.