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.
Cold Sore Causes. Cold sores are caused by the contagious herpes simplex virus. They are small blisters that are usually found on the outer part of the lips, chin and nose although they can also be found on other parts of the body to. Quite often you can experience a tingling feeling for up to 24 hours before the sores appear.