I. INTRODUCTION Acute bronchitis is an inflammation of the large bronchi (medium-sized airways) in the lungs that is usually caused by viruses or bacteria and may last several…
Slide 1Briefing for Interagency Review June 4, 2012 Draft Proposal for the Particulate Matter (PM) National Ambient Air Quality Standards (NAAQS) Washington, DC Slide 2 Overview…
Bronchitis Causes Bronchitis occurs most often during the cold and flu season, usually coupled with an upper respiratory infection. A number of bacteria are also known to…