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. 2013 Jan 30;9(4):879–888. doi: 10.4161/hv.22982

Table 2. Seroconversion rates according to virus concentration of vaccine against yellow fever.

Group IU/dose Seroconversion1
No Yes Total Proportion 95% CI
27,476 IU 3 128 131 0.977 0.935; 0.995
10,447 IU 1 114 115 0.991 0.953; 1.000
3013 IU 3 129 132 0.977 0.935; 0.995
587 IU 4 127 131 0.969 0.924; 0.992
158 IU 14 108 122 0.885 0.815; 0.936
31 IU 39 79 118 0.669 0.577; 0.753

1Seronegative before vaccination to seropositive or 4 fold increase in titers p = 0.000