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Table 3 Results of ELISA and FAMA for the detection of anti-VZV IgG antibodies in sera of children 1–17 years of age (n = 1769 tested by ELISA and FAMA). The data set was stratified by the varicella vaccination status of the children. Germany

From: Varicella-zoster virus seroprevalence in children and adolescents in the pre-varicella vaccine era, Germany

ELISA positive   
FAMA
positive n (%) negative n (%) total n (%)
 varicella vaccinated 5 (100%) 0 5 (100%)
 not varicella vaccinated 176 (99%) 2 (1%) 178 (100%)
 no vaccination card 14 (100%) 0 14 (100%)
 total 195 (99%) 2 (1%) 197 (100%)
ELISA negative   
FAMA
positive n (%) negative n (%) total n (%)
 varicella vaccinated 12 (25.5%) 35 (74.5%) 47 (100%)
 not varicella vaccinated 53 (4.0%) 1268 (96.0%) 1321 (100%)
 no vaccination card 7 (8.1%) 79 (91.9%) 86 (100%)
 total 72 (5.0%) 1382 (95.0%) 1454 (100%)
ELISA equivocal result   
FAMA
positive n (%) negative n (%) total n (%)
 varicella vaccinated 12 (66.7%) 6 (33.3%) 18 (100%)
 not varicella vaccinated 39 (40.6%) 57 (59.4%) 96 (100%)
 no vaccination card 3 (75.0%) 1 (25.0%) 4 (100%)
 total 54 (45.8%) 64 (54.2%) 118 (100%)