chain reaction (PCR) has revolutionized the diagnosis of these infections because of their
high sensitivity despite the lack of data on clinical usefulness. We conducted a retrospective
study that included patients with positive cerebrospinal fluid (CSF) PCR for herpes simplex
virus, varicella-zoster virus, JC virus, cytomegalovirus (CMV), and Epstein-Barr virus (EBV)
between January 2009 and December 2011. The positive results were grouped into definite …