Question special
Resident

The exploratory analysis is fascinating. I note that it is entirely descriptive. I find this very interesting, as I think many would struggle to avoid the temptation to undertake (underpowered) statistical tests, whether pre-specified or post-hoc.

Given the suggestion of lower efficacy against DENV-3 serotypes, did you consider putting a confidence interval around the relative efficacy (DENV-3 vs others, or DENV-3 vs DENV-2)? I suspect it would be wide!