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. 2025 Apr 9;19(4):e0012993. doi: 10.1371/journal.pntd.0012993

Table 7. Logistic models to high* neutralizing antibody titer for yellow fever 30–45 days after vaccination in adults (between 18 and 50 years) (n = 240).

Variables Crude OR
(95% CI)
Adjusted OR**
(95% CI)
μFRNT dengue pre-vaccination
Positive 0.35 (0.15–0.76) 0.34 (0.14–0.74)
Negative 1 1
PRNT90 Zika pre-vaccination
Positive 1.51 (0.49–6.64) 2.06 (0.64–9.22)
Negative 1 1
Age (year) 1.02 (0.98–1.07) 1.02 (0.98–1.06)

Pre-vaccine yellow fever seropositive individuals and individuals who had seronegative and indeterminate titers 30–45 days post-vaccination were excluded; Data from the subsample of participants tested for μFRNT dengue and PRNT90 Zika.

*

Reference category: μFRNT YF ≤1.106 (low).

**

Model adjusted by μFRNT dengue pre-vaccination, PRNT90 Zika pre-vaccination, Age (years) and sex: AIC = 230.