Typhoid Vi Vaccine Effectiveness in Hechi, Guangxi, China

Learn more about:
Related Clinical Trial
Non-inferiority Trial of Locally Manufactured Typhoid Conjugate Vaccine ‘Typhocon’ in Bangladesh Effectiveness of a Typhoid Conjugate Vaccine in DRC Transcriptomic Responses for the Identification of Pathogens Evaluation of Typhoid Conjugate Vaccine Effectiveness in Ghana Non-inferiority and Safety Study of EuTCV Compared to Typbar-TCV in Healthy 6 Months-45 Years Aged Participants Commercial Typhoid Tests Validation Trial Commercial Typhoid Tests Validation WHNRC (Western Human Nutrition Research Center) Fiber Intervention Study The Azithromycin and Cefixime Treatment of Typhoid in South Asia Trial (ACT-South Asia Trial) Phase 4 Study To Assess The Safety Of Vivotif At Different Release Titers Among Travelers Extension Study of H01_04TP to Evaluate the Booster Response Induced by Vi-CRM197 in Adults Safety and Immunogenicity of Three Formulations of Vi-CRM197 Vaccine Against S. Typhi in Adults (18-40 Years Old) Safety and Immunogenicity of Vi-CRM197 Vaccine Against S. Typhi in Adult (18-40 Years Old) Effects of Aging on Primary and Secondary Vaccine Responses in a 15-Year Longitudinal Cohort Safety and Immunogenicity of Typhax, a Typhoid Vaccine Safety and Tolerability of Typhoid Conjugate Vaccine (EuTCV) in Healthy Adults Immune Equivalence Between Multi-dose and Single Dose Formulation of Vi-DT and Their Overall Safety (Phase III) Investigating Enteric Fever – Salmonella Typhi and Paratyphi Challenge Study Induction of Gut Permeability by an Oral Vaccine Studies of Immune Responses to Orally Administered Vaccines in Developing Country Long Term Protection by and Persistence of Vi Antibodies Induced by Vi-rEPA Conjugate Vaccines in Vietnamese Children Injected at 2-5 Years or at 5-8 Years of Age Salmonella Typhi Vi O-Acetyl Pectin-rEPA Conjugate Vaccine Safety and Immunogenicity of Vi-CRM197 Vaccine Against S. Typhi in Adults, Children, Older Infants and Infants Safety and Immunogenicity of Vi-CRM197 Vaccine Against S. Typhi in Children, Older Infants and Infants Typhoid Fever: Combined vs. Single Antibiotic Therapy Vaccines Against Salmonella Typhi Immune Non-inferiority and Safety of a Vi-DT Typhoid Conjugate Vaccine Dose Ranging Study to Determine the Safety, Reactogenicity and Immunogenicity of Typhoid Fever Vaccine (Ty800) in Healthy Adult Subjects Immunogenicity, Safety and Tolerability of the Typhoid Fever Vaccine Candidate M01ZH09 in Healthy Adults CVD 909 Vi Prime Boost Study Gatifloxacin Versus Ceftriaxone in the Treatment of Enteric Fever Safety, Reactogenicity and Immunogenicity of Vi-DT;Typhoid Conjugate Vaccine Typhoid Conjugate Vaccine Introduction in Navi Mumbai, India Clinical Efficacy of Typhoid Conjugate Vaccine (Vi-TCV) Among Children Age 9 Months Through 12 Years in Blantyre, Malawi Study of a Single Dose of SP093 Typhoid Vi Polysaccharide Vaccine in Japanese Subjects Typhoid Conjugate Vaccine Trial Among Children Younger Than 2 Years in Ouagadougou, Burkina Faso Understanding Typhoid Disease After Vaccination Typhoid Vi Vaccine Effectiveness in Hechi, Guangxi, China Introduction of the Vi Polysaccharide Typhoid Vaccine in Hue City, Central Vietnam Comparison of Two Drugs Regimen in Treatment of Complicated Typhoid Fever in Children Evaluation of the Vi Polysaccharide Vaccine Against Typhoid Fever Safety and Immunogenicity of a Vi-DT Typhoid Conjugate Vaccine Combined Vi Vaccination and Health Education Program on the Burden of Typhoid in Childhood Global Genomic and Proteomic Profiling of African Children With Typhoid Fever

Brief Title

Typhoid Vi Vaccine Effectiveness in Hechi, Guangxi, China

Official Title

Typhoid Vi Vaccine Effectiveness in a Population Older Than 5 Years of Age Living in an Endemic Area in Hechi, Guangxi, P.R. China: A Group-Randomized Controlled Demonstration Project

Brief Summary

      This study is part of International Vaccine Institute (IVI)'s typhoid Vi demonstration
      project that aims to accelerate the rational introduction of Vi vaccines in typhoid endemic
      countries. The purpose of this study is to determine the effectiveness of the Vi vaccine
      following a mass typhoid immunization campaign in an endemic area in Hechi City in the
      Guangxhi province of China. The cost-effectiveness and safety of Vi vaccination will also be

Detailed Description

      Typhoid fever is a major cause of morbidity worldwide. The disease predominantly affects
      school-aged children, is more prevalent in urban areas, may last for several weeks and can
      lead to serious complications. Management of this disease is further complicated by the
      emergence of multi-drug resistant strains. Vaccination of high risk populations is considered
      the most promising strategy for the control of typhoid fever. The Vi polysaccharide vaccine
      has been targeted for accelerated introduction into public health programs due to the
      following reasons: it has been shown to have consistent efficacy results even in areas of
      high typhoid incidence, is given as a single dose, lacks patent protection and requires less
      strict cold chain requirements.

      This project attempts to evaluate a new vaccination strategy for residents of endemic areas.
      A cluster-randomized trial involving the Vi polysaccharide vaccine and an active control
      (meningococcal A vaccine) was designed to determine the effectiveness and the feasibility of
      providing Vi vaccine under actual programmatic conditions in 2 populous townships of Hechi
      City. The vaccines used in this study are locally produced and licensed in China. A 1 year
      pilot phase will precede the actual Vi-demonstration project. Surveillance for typhoid fever
      cases will continue after the mass immunization campaign. A passive surveillance system to
      evaluate adverse events following immunization will be implemented. Socio-economic studies
      will be conducted in parallel to the effectiveness evaluation. The knowledge, attitudes,
      beliefs and practices among parents and health care providers regarding typhoid illness,
      treatment and prevention will be assessed. Logistic, feasibility and vaccine costs will also
      be determined.

      Secondary objectives of this trial are:

        -  To estimate the logistic feasibility of a mass typhoid immunization campaign

        -  To assess the knowledge, attitudes, beliefs and practices among parents and health care
           providers regarding typhoid illness, treatment and prevention

        -  To study typhoid fever risk factors in the population

Study Phase

Phase 4

Study Type


Primary Outcome

vaccine effectiveness

Secondary Outcome

 logistic feasibility of mass typhoid immunization




Typhoid Vi vaccine


* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline.

Recruitment Information

Recruitment Status


Estimated Enrollment


Start Date

October 2001

Completion Date

November 2006

Primary Completion Date

November 2006

Eligibility Criteria

        Inclusion Criteria:

          -  Registered in the project census

        Exclusion Criteria:

          -  Pregnant

          -  Lactating

          -  Fever > 37.5 degrees Celsius, axillary




5 Years - 60 Years

Accepts Healthy Volunteers

Accepts Healthy Volunteers


Dong Baiqing, MD, , 

Location Countries


Location Countries


Administrative Informations



Organization ID


Study Sponsor

International Vaccine Institute


 Centers for Disease Control and Prevention

Study Sponsor

Dong Baiqing, MD, Principal Investigator, Guangxi Center for Disease Control and Prevention

Verification Date

March 2008