The JC virus, or John Cunningham virus, is a common germ. More than half of all adults have been exposed to it. It doesn't cause problems for most people, but it can be dangerous if you have a ...

Multiple sclerosis (MS) and other conditions affecting the immune system can activate the John Cunningham (JC) virus, causing a potentially life threatening infection. The JC virus is common ...

Department store JC Penney has reported that its net loss in the first quarter ended May 4 has more than tripled to $63 million from $17 million a year ago. Sales fell 8.1% to $1.37 billion from $ ...