Childhood ear infections are so prevalent in the USA that they cost billions of dollars to treat every year.
Researchers at UCLA and Brigham and Women’s Hospital in Boston have determined that there is a significant correlation between childhood ear infections and air quality, with an increased rate of infection in geographical areas effected by air pollution and a steady decrease in infections as air quality improves.
For more details, please see the linked article at the AudiologyOnline website: http://www.audiologyonline.com/news/news_detail.asp?news_id=4154