Table 3.

Mean and s.d. of serum anti-V. cholerae LPS antibody in 948 cholera vaccine recipients pre- and 28 days post-vaccination, and fold change.

	mean	s.d.
pre-vaccination (EU ml−1)	22.54	37.95
post-vaccination (EU ml−1)	76.89	114.88
fold change (pre/post)	5.42	12.41