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.
Bacteria are the most common cause of pneumonia in adults. Many types of bacteria can cause bacterial pneumonia. Streptococcus pneumoniae or pneumococcus bacteria are the most common cause of bacterial pneumonia in the United States. If your pneumonia is caused by one of the following types of bacteria, it is called atypical pneumonia. 1  Legionella pneumophila. 2  Mycoplasma pneumoniae. 3  Chlamydia pneumoniae.