Table 1.

Summary of censored data type by serotype

Data type	DENV-1	DENV-2	DENV-3	DENV-4
Left-censored	7,714	7,464	2,980	867
Interval-censored	342	408	1,701	825
Right-censored	2,527	2,724	5,800	4,658

For each serotype, the number of individuals that were either left-, interval-, or right-censored. Left-censored individuals entered the study already seroconverted to the specific serotype. Interval-censored individuals became infected to the specific serotype during their time in the study period. Right-censored individuals left the study having never been infected to the specific serotype. Note that none of the above columns adds up to 11,703 (the total number of participants). For some individuals, no PRNT test was conclusive for certain serotypes, and as such they were removed from consideration toward the calculations concerning that serotype. Additionally, DENV-4 was not tested for until 2006, and the smaller number of censored individuals for DENV-4 reflects this.