The Efficacy of a<i>Salmonella typhi</i>Vi Conjugate Vaccine in Two-to-Five-Year-Old Children

Abstract

The Vi-rEPA conjugate typhoid vaccine is safe and immunogenic and has more than 90 percent efficacy in children two to five years old. The antibody responses and the efficacy suggest that this vaccine should be at least as protective in persons who are more than five years old.