| varicella zoster virus in health care workers in northern israel: seroprevalence and predictive value of history of varicella infection. | health care workers (hcws) are susceptible to hospital acquired varicella zoster virus (vzv). we evaluated seroprevalence and predictive value of a history of varicella disease (vd) with vzv serology in hcws in northern israel. a total of 200 hcws were enrolled. a high rate of seropositivity for vzv-igg was found: 98.5% seropositive and only 1.5% seronegative. a positive history of vd was an excellent predictor for the presence of vzv-igg; however, a negative history of vd does not rule out the ... | 2008 | 18675150 |