Legionnaires' disease Legionnaires' disease Legionnaires' disease, also known as legionellosis, is a form of atypical pneumonia caused by any type of "Legionella" bacteria. Signs and symptoms include cough, shortness of breath, high fever, muscle pains, and headaches. Nausea, vomiting, and diarrhea may also occur. This often begins 2-10 days after exposure. The bacterium is found naturally in fresh water. It can contaminate hot water tanks, hot tubs, and cooling towers of large air conditioners. It is usually spread by breathing in mist that contains the bacteria. It can also occur when contaminated water is aspirated. It typically does not spread directly between
Disease in colonial America to the country and very controversial because of the threat that the procedure itself could be fatal, or otherwise spread the disease. It was introduced by Zabdiel Boylston and Cotton Mather in Boston in 1721. The procedure involved injecting the infection into the patient, which resulted in a mild form of the disease. This led to a shorter period a person had Smallpox than if they had contracted naturally. Strong support for inoculation came the leading Puritan minister, Cotton Mather, who preached for inoculations during the 1721 smallpox epidemic in Boston. His advice was heeded primarily by well-educated wealthy Puritan