Deer mice are not uncommon in rural subdivisions, barns, and other outbuildings. Some mice carry an airborne, often fatal infection called hantavirus pulmonary syndrome--in Montana, usually just called "hantavirus." Gene Brodeur talks with Montana Tech researcher Richard Douglass about his researches into hantavirus in Anaconda, Butte, and Cascade. Produced by Gene Brodeur for KUSM/MontanaPBS, MSU-Bozeman.