TABLE 2.

Neonatal VZV-IgG Titer in Relation to Maternal VZV-IgG Titer

Neonatal VZV-IgG Titer
At Risk*Not at Risk*
PositiveNegativePositiveNegative
Maternal VZV-IgG titer
 Positive9132244
 Negative02057
9332751
Predictive value of maternal VZV-IgG titer
PPV (not at risk): 41/44 = 0.94
NPV (at risk): 7/7 = 1.00
  • * According to the CDC.16

  • Clinical information for these neonates is in “Results.”