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Typhoid FeverNCT00386789

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

An observational study of Typhoid Fever, run by Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) at 4 sites in 2 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Typhoid fever remains an important cause of morbidity and mortality in the developing world. It is estimated that more than 16 million cases and about 600,000 deaths occur annually, most of which occur in Southeast Asia and Africa. Read more about this study

Who is it for?
Ages 10 to 13 years
Conditions the study is for
Typhoid Fever
How many people
0 participants
Where
4 sitesin 2 countries
Study dates
5 Oct 2006to 17 Jun 2008
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 10 to 13 years
  • All sexes
  • No healthy volunteers
  • Child

Who may be able to join

  • Subjects who were involved in the Phase III trial, OH98-CH-N002.

Who cannot join

  • Not specified.

Trial locations and contacts

4 sites in 2 countries.

4 sites in 2 countries

Vietnam3 sites
  • Dong Thap Provincial Hospital

    Dong Thập

  • National Institute of Hygiene and Epidemiology

    Hanoi

  • Pasteur Institute

    Ho Chi Minh City

Other trials in Vietnam

United States1 site
  • National Institute of Child Health and Human Development (NICHD), 9000 Rockville

    Bethesda, Maryland, 20892

Other trials in United States

About this study

Typhoid fever remains an important cause of morbidity and mortality in the developing world. It is estimated that more than 16 million cases and about 600,000 deaths occur annually, most of which occur in Southeast Asia and Africa. Ingestion of food or water contaminated by acutely infected persons or chronic carriers is the most common form of transmission. As a result, typhoid fever is prevalent where unsafe drinking water or contaminated food is common.

Typhoid fever is highly endemic in Vietnam, especially in the southern provinces and is a significant disease in both preschool and school-aged children. Data from Dong Thap Provincial Hospital, Mekong delta region showed that among 3,934 hospitalized typhoid fever cases from 1990 to 1995, 4.2% had complications and 0.8% died.

Typhoid fever has become difficult and expensive to treat. About 90% of Salmonella typhi isolates are of multidrug-resistant (resistant to chloramphenicol, ampicillin, and trimethoprim-sulfamethoxazole) and 76% of isolates showed reduced susceptibility to fluoroquinolones. Isolates with full fluoroquinolone or extended spectrum cephalosporin resistance have not yet reported in Vietnam but occur sporadically in the Indian subcontinent. If they become widespread, alternative treatment options will be limited. The improvement of sanitation, provision of safe water and elimination of chronic carriage is not expected to be achieved quickly. Accordingly, vaccination against typhoid fever is increasingly important national public health priority.

Read the detailed description

Typhoid fever remains an important cause of morbidity and mortality in the developing world. It is estimated that more than 16 million cases and about 600,000 deaths occur annually, most of which occur in Southeast Asia and Africa. Ingestion of food or water contaminated by acutely infected persons or chronic carriers is the most common form of transmission. As a result, typhoid fever is prevalent where unsafe drinking water or contaminated food is common.

Typhoid fever is highly endemic in Vietnam, especially in the southern provinces, and is a significant disease in both preschool and school-aged children. Data from Dong Thap Provincial Hospital, Mekong delta region showed that among 3,934 hospitalized typhoid fever cases from 1990 to 1995, 4.2% had complications and 0.8% died.

Typhoid fever has become difficult and expensive to treat. About 90% of Salmonella typhi isolates are of multidrug-resistance (resistant to chloramphenicol, ampicillin, and trimethoprim-sulfamethoxazole) and 76% of isolates showed reduced susceptibility to fluoroquinolones. Isolates with full fluoroquinolone or extended spectrum cephalosporin resistance have not been reported yet in Vietnam but occur sporadically in the Indian subcontinent. If they become widespread, alternative treatment options will be limited. The improvement of sanitation, provision of safe water and elimination of chronic carriage are not expected to be achieved quickly. Accordingly, vaccination against typhoid fever is an increasingly important national public health priority.

Conditions
Typhoid Fever
Keywords
Typhoid Fever, Serological Survey, Follow-Up, Protection
Medical subject headings
Typhoid Fever

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Oct 2006 (estimated)
  2. Study start5 Oct 2006
  3. Study completion17 Jun 2008

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Time perspective
Other
Enrolment
0 participants
IDs, dates and publications
ClinicalTrials.gov ID
NCT00386789
Sponsor's protocol ID
999907004
Other IDs
07-CH-N004
Status last verified
17 Jun 2008
First submitted
11 Oct 2006
Last updated
2 Jul 2017
Results posted
No

Publications

  • Smith MD, Duong NM, Hoa NT, Wain J, Ha HD, Diep TS, Day NP, Hien TT, White NJ. Comparison of ofloxacin and ceftriaxone for short-course treatment of enteric fever. Antimicrob Agents Chemother. 1994 Aug;38(8):1716-20. doi: 10.1128/AAC.38.8.1716.

    PubMed 7986000

Questions about this trial

What is this clinical trial studying?

An observational study of Typhoid Fever, run by Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) at 4 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 2 Jul 2017. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 4 sites in Vietnam, United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00386789, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Jul 2017.

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