According to a July 7, 2009 press release the Centers for Disease Control and Prevention (CDC) has launched the online Environmental Public Health Tracking Network which enables users to track environmental exposures and chronic health conditions. According to Michael McGeehin, Ph.D., director of the Division of Environmental Hazard and Health Effects of CDC's National Center for Environmental Health, "The Tracking Network is the foundation we need to make better environmental health decisions and help prevent chronic illnesses, such as asthma, cancer, and heart disease."
This program has already proven beneficial for the Utah Department of Health which received a call from a person concerned about incidents of cancer in his neighborhood. Instead of taking a year to complete a study, in less than a day the tracking program was able to determine the likelihood of cancer in his area was no greater than in the state as a whole.
In addition to the press release and site, A YouTube video is available with more details about the program.