Response rates in Placebo and Vaccine recipients as measured by ELISA and BAMA.

*For ELISA, the criterion for a positive response was a value of 3 SD above the mean of the Week 26 placebo group read-outs (n = 40) where read-outs are the natural logarithm-transformed averages of the OD readings across four replicates.**For BAMA, a positive response is defined as (a) MFI greater than 263; (b) read-outs at Week 26 divided by read-outs at Week 0 greater than 3 for both blank-subtracted and blank-unsubtracted read-outs, and (c) blank MFI less than 5,000.