Clinical and Laboratory Findings That Differentiate Herpes Simplex Virus Central Nervous System Disease from Enteroviral Meningitis

Figure 1

Patient flow diagram. PCR: polymerase chain reaction, HSV: herpes simplex virus, EnV: enterovirus, a: case prior to enrollment period of January 2005 to December 2011; b: further breakdown includes two human herpes virus 6, nine varicella zoster virus, one Epstein-Barr virus, one cytomegalovirus, and one toxoplasmosis; c: further breakdown includes four eye fluids, one nasopharyngeal, one brain biopsy, and one lymph node biopsy; d: hospital identification number missing from regional laboratory record, unable to cross-reference to patient’s chart; e: patients from regional hospitals other than those included in the study.