Las Vegas has become a catalyst for Legionnaire's Disease.  Reuters has reported that at least 6 people have contracted the disease since 2009 and that there were no fatalities.  The Arisa Resort and Casino sent an e-mail to guests who had stayed at the hotel from June 21 to July 4, 2011.  The Vice President of Hotel Operation said in the statement that water tests had detected signs of the bacteria. 

Health officials have recently notified us of a few reported instances of guests who visited Aria, were diagnosed with, treated for and recovered from Legionnaires' disease, said a letter posted on the hotel's website. 

Legionnaire's disease develops two to 14 days after exposure to the bacteria.  Early symptoms include headache, muscle pain, chills, and 104 degrees Fahrenheit or higher fever.  Later symptoms may include cough with or without mucus or blood, shortness of breath, chest pain, fatigure, loss of appetite, gastrointestinal symptoms, and confusion or other mental changes.

Needless to say, the already ailing economy and Legionnaire's Disease have negatively affected tourism.