1 At age 65, one out of three people has a hearing loss. 2  60 percent of the people with hearing loss are either in the work force or in educational settings.
The 3 main causes of pneumomediastinum are. 1  Alveolar rupture with dissection of air into the mediastinum. 2  Esophageal perforation. 3  Esophageal or bowel rupture with dissection of air from the neck or the abdomen into the mediastinum.
In 2013, a total of 51% of reported Legionnairesâ disease cases were caused by L. longbeachae, 28% by L. pneumophila, and 21% by other Legionella species (3). Two small caseâcontrol studies on risk factors for L. longbeachae pneumonia conducted in South Australia have been published (10,11).