From the above letter written by Kitty Rhoades, deputy secretary of the Wisconsin Department of Health Services:

The Wisconsin Department of Health Services has reviewed the scientific literature on the issue of wind turbines and health, and we will continue to do so as new studies are published. Our review of cunent scientific knowledge indicates that levels of noise, flicker and infrasound measured from wind turbines at current setback distances do not reach those that have been associated with objective physical health effects. The Department has considered previous requests to conduct formal epidemiologic studies in Wisconsin, and Division of Public Health staff have discussed this issue with colleagues at UW School of Medicine and Public Health, other state health departments, and the Centers for Disease Control and Prevention. However, we have been unable to identify a study design or methodology that could provide a constructive conclusion to the individual concerns that have been raised. If such a study were performed, we would review its methodology and findings. [Emphasis added]