Salmon-Challis National Forest, Idaho. It is the second largest National Forest in the continental United States. In 1876, the US Congress created an office to evaluate the conditions of forests in the US. In 1891, President Theodore Roosevelt assigned the control of the newly named, national forests to the US Forest Service.
Cold sores are caused by certain strains of the herpes simplex virus (HSV). HSV-1 usually causes cold sores.
Most cases of cold sores are a consequence of infection with HSV-1 (herpes simplex virus type 1). Infection with HSV-2, usually resulting from oral sex with a person who has genital herpes, is a much less common cause of cold sore outbreaks.