the seroepidemiology of infection due to herpes simplex type 1 ( hsv-1 ) and varicella-zoster ( vzv ) viruses was investigated in 224 saudi children aged from under 1 year to 15 years and 452 adults ( healthy male blood donors and pregnant women ) using a presently available sensitive indirect immunofluorescence technique to detect antibodies to these viruses in order to determine the age of primary infection .
C0009450
infection
C0042338
vzv