Legionnaires' disease fever experience fever and muscle aches without pneumonia. They generally recover in 2-5 days without treatment. For Pontiac fever, the time between exposure and symptoms is generally a few hours to 2 days. Over 90% of cases of Legionnaires' disease are caused by "Legionella pneumophila." Other types include "L. longbeachae", "L. feeleii", "L. micdadei", and "L. anisa". Legionnaires' disease is usually spread by the breathing in of aerosolized water and/or soil contaminated with the "Legionella" bacteria. Experts have stated that Legionnaires' disease is not transmitted from person to person. In 2014, one case of possible spread from someone sick to
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