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.
Respiratory sounds, breath sounds, or lung sounds refer to the specific sounds generated by the movement of air through the respiratory system. These may be easily audible or identified through auscultation of the respiratory system through the lung fields with a stethoscope.