Efficacy trial of Vi polysaccharide vaccine against typhoid fever in south-western China

• Main Authors: Yang H.H (Author), Wu C.G (Author), Xie G.Z (Author), Gu Q.W (Author), Wang B.R (Author), Wang L.Y (Author), Wang H.F (Author), Ding Z.S (Author), Yang Y. (Author), Tan W.S (Author), Wang W.Y (Author), Wang X.C (Author), Qin M. (Author), Wang J.H (Author), Tang H.A (Author), Jiang X.M (Author), Li Y.H (Author), Wang M.L (Author), Zhang S.L (Author), Li G.L (Author)
• Format: Book
• Published: The World Health Organization, 2001-01-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

OBJECTIVE: To test the efficacy of locally produced Vi vaccine over a time period of longer than one year. METHODS: A double-blinded, randomized field trial was performed in Guangxi Zhuang Autonomous Region in south-western China, using 30 mg doses of locally produced Vi. Enrolled subjects were 3-50...