A chickenpox outbreak is hitting Penn State's main campus. Three cases have been confirmed on the University Park campus as of Friday, the school said in a statement. Since people are contagious one to two days before the rash appears and symptoms typically develop 10 to 21 days after exposure,

The University Health Services at Penn State has confirmed three cases of chickenpox (varicella) on the University Park campus. Chickenpox, which is caused by the varicella-zoster virus, is highly contagious and characterized by itchy blisters that cover the head and body.

Three cases of chickenpox have been confirmed at Penn State's main campus according to University Health Services. According to a release from campus health officials, members of the campus community who have received two doses of the varicella vaccine or have had the disease are considered protected.