A judge has ordered Ontario’s chief medical officer of health to testify in a case relating to the health effects of wind turbines.

A southwestern Ontario couple whose family farm sits in a proposed wind farm  say they are being blocked in their efforts to determine if the turbines cause any adverse health effects.

Shawn and Tricia Drennan’s farm north of Goderich sits in the proposed Kingsbridge II wind farm and one turbine will be about 650 metres from their house.

Superior Court Justice Mary Sanderson has quashed a lower court-ruling and ordered Dr. Arlene King to testify in the Drennan’s case.