Duricova et al. (12), reported an adequate antibody response for tetanus, diphtheria, streptococcus pneumonia, measles, and rubella in over 95% of infants, for HiB in 65% and for Mumps in 75% of 49 children exposed in utero to anti-TNFα compared to healthy controls, median ages 35 and 50 months. Here, TNF is linked to tetanus.