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 diffusion mapping Disease diffusion mapping Disease diffusion occurs when a disease is transmitted to a new location. It implies that a disease spreads, or pours out, from a central source. The idea of showing the spread of disease using a diffusion pattern is relatively modern, compared to earlier methods of mapping disease, which are still used today. According to Rytokonen, the goals of disease mapping are: 1) to describe the spatial variation in disease incidence to formulate an etiological hypothesis; 2) to identify areas of high risk in order to increase prevention; and 3) to provide a map of disease risk for