Foodborne disease outbreaks caused by Bacillus cereus, Clostridium perfringens, and Staphylococcus aureus--United States, 1998-2008. Bennett SD(1), Walsh KA, Gould LH. Author information: (1)Centers for Disease Control and Prevention, 1600 Clifton Rd, MS C-09, Atlanta, GA 30333, USA. iyk3@cdc.gov.
1 Rales: Small clicking, bubbling, or rattling sounds in the lungs. 2  They are heard when a person breathes in (inhales). 3  They are believed to occur when air opens closed air spaces. 4  Rales can be further described as moist, dry, fine, and coarse. 5  Rhonchi: Sounds that resemble snoring.
Lung sounds, crackles or rales are abnormal crackling or rattling sounds originating from the lungs while breathing. Read more on crackles symptoms, causes and treatment. Lung sounds, crackles, rales or breath sounds are popping sounds coming from the airway. The crackling originates if a choked airway suddenly opens up, resulting in sound vibrations in the airway. Crackles in the lungs are created during inhalation and exhalation of air.