Probable cases were those that have not had a laboratory test but exhibit symptoms, a severe form of noncontagious pneumonia.
Epidemiological evidence confirmed a Legionnaires' outbreak among people who stayed at the hotel in the same period.
Legionnaires' disease, a severe, lethal form of pneumonia, is caused by the bacterium Legionella pneumophila
found in both potable and non-potable water systems. People get sick when they breathe in mist such as from an air-conditioning plant or take water into their lungs.
The hotel voluntarily shut down and hired experts to conduct testing despite the fact that the bacterium has not been confirmed in the hotel. The hotel is going ahead with precautionary remedial activities such as cleaning, scrubbing, and chlorination of the entire water distribution system. Public health officials and environmental experts are working to identify the source fo the outbreak.
Ten percent of the people affected with the disease will die. The disease infects 10,000 to 18,000 people yearly, while some cases might go unreported.
People with Legionnaires' feel tired and weak, leading to coughing, diarrhea, nausea, vomiting, headaches, muscle aches, chest pain, and dyspnea. The incubation period is from 2 to 10 days - this is the period when symptoms first appear after a person is infected with the bacteria. The disease can lead to treatment in the ICU. Usually, people with the infection fully recover. People at risk are the elderly, smokers, people with chronic lung injury, or the immunocompromised. Legionella is naturally found in freshwater, and can grow in warm water can be found in showerheads and faucets, hot tubs, cooling towers, hot water tanks, decorative fountains or plumbing systems in large buildings.
The disease is called Legionnaires', after an outbreak at a convention in the American Legion.