Efficacy trial of Vi polysaccharide vaccine against typhoid fever in south-western China
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...
Main Authors: | , , , , , , , , , , , , , , , , , , , |
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Format: | Article |
Language: | English |
Published: |
The World Health Organization
2001-01-01
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Series: | Bulletin of the World Health Organization |
Subjects: | |
Online Access: | http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0042-96862001000700007 |