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. 2020 Nov 12;8(4):674. doi: 10.3390/vaccines8040674

Table 2.

Compilation of vaccine efficacies estimation for Takeda’s DENVax vaccine phase 3 trial post-vaccination surveillance period part 2 (18 months). Section A shows the vaccine efficacies by serostatus and serotype, and Section B shows the overall vaccine efficacy by serotype. Highlighting problems observed for serotypes 3 (blue) and 4 (grey) are indicated. The raw data used for the Bayesian analysis are available in [10].

Part 2 Efficacy Data of the TAK-003 Phase 3 Trial
section A section B
Seropositive at baseline (82.2%) Seronegative at baseline (74.9%) Overall (seropositive and seronegative)
vaccine efficacy
Dengue Serotype Vaccinated Control Estimated vaccine Vaccinated Control Estimated Vaccine Vaccinated Control Estimated vaccine
(n=9167) (n=4589) efficacy and 95% (n=3531) (n=1726) efficacy and 95% (n= 12,700) (n=6316) efficacy and 95%
Dengue cases Dengue cases Confidence Interval Dengue cases Dengue cases Confidence Interval Dengue cases Dengue cases Confidence Interval
ALL 75 150 75.8% 39 56 66.1% 114 206 72.5%
[67.2%,81.0%] [48.9%,77.3%] [65.6%,78.1%]
DEN1 21 37 71.2% 17 25 66.7% 38 62 69.4%
[51.8%,83.3%] [39.2%,82.1%] [54.6%,79.7%]
DEN2 7 54 93.2% 1 26 97.7% 8 80 94.6%
[91.1%,97.1%] [90.7%,99.7%] [90.3%,97.7%]
DEN3 43 54 60.3% 20 6 59.9% 63 60 47.7%
[40.6%,73.2%] [328.5%,31.1%] [25.4%,63.1%]
DEN4 4 5 59.5% 1 0 inconclusive 5 5 50.1%
[47.2%,89.4%] [72.5%,85.4%]