Children whose mothers receive tetanus immunization appear to benefit from the vaccine for longer periods than previously realized.
The finding comes from an extensive cholera vaccine trial carried out in 1974 in rural Bangladesh. More than 41000 children and nonpregnant women participated in the trial, in which the control group received tetanus toxoid. Researchers from a number of international health organizations have participated in the study, and they tracked mortality rates through 1987 of children born to women in the study.
Voelker R. Durable Tetanus Protection. JAMA. 1998;280(2):125. doi:10.1001/jama.280.2.125-JWM80004-6-1