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Cellular and Humoral Immunity in Elderly After Immunization With a Japanese Encephalitis Vaccine

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified June 2010 by Medical University of Vienna.
Recruitment status was:  Enrolling by invitation
ClinicalTrials.gov Identifier:
First Posted: July 20, 2011
Last Update Posted: July 20, 2011
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
Medical University of Vienna
The aim of this project is to investigate humoral and cellular immune responses before and after immunisation with the Japanese encephalitis vaccine IXIARO in subjects above 65 years of age.

Condition Intervention Phase
Cellular Immunity in the Elderly (Above 65y) After Primary Vaccination Against JE Biological: IXIARO Phase 4

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
Official Title: Characterisation of Cellular and Humoral Immunity in Elderly People After Immunization With a Purified, Inactivated Japanese Encephalitis Vaccine.

Resource links provided by NLM:

Further study details as provided by Medical University of Vienna:

Primary Outcome Measures:
  • cellular immunity (cytokine production upon stimulation with Japanese Encephalitis Virus Antigen) 7 days after the 2. JE-vaccination [ Time Frame: 7 days after the 2 JE vaccinations ]

Estimated Enrollment: 30
Study Start Date: November 2010
Estimated Study Completion Date: June 2012
Estimated Primary Completion Date: June 2012 (Final data collection date for primary outcome measure)
Intervention Details:
    Biological: IXIARO
    2 immunizations (0,5ml) with a 28 day interval

Information from the National Library of Medicine

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Ages Eligible for Study:   65 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • adults (≥65 years),
  • both sexes,
  • willingness to sign written informed consent form

Exclusion Criteria:

  • age below 65 years
  • status post japanese encephalitis, TBE, dengue, yellow fever or West Nile virus infection
  • previous immunization against yellow fever, japanese encephalitis (dengue or WNV)
  • current acute infection (body temperature above 37,9°C)
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01398540

Sponsors and Collaborators
Medical University of Vienna
Principal Investigator: Ursula Wiedermann, MD, PhD Institute of Specific Prophylaxis and Tropical medicine, Vienna
  More Information

Responsible Party: Prof. Dr. Ursula Wiedermann-Schmidt, : Institute of Specific Prophylaxis and Tropical Medicine, Medical University of Vienna
ClinicalTrials.gov Identifier: NCT01398540     History of Changes
Other Study ID Numbers: IX-sensesc 1.2
First Submitted: July 19, 2011
First Posted: July 20, 2011
Last Update Posted: July 20, 2011
Last Verified: June 2010

Additional relevant MeSH terms:
Encephalitis, Japanese
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Encephalitis, Arbovirus
Arbovirus Infections
Virus Diseases
Encephalitis, Viral
Central Nervous System Viral Diseases
RNA Virus Infections
Flavivirus Infections
Flaviviridae Infections
Infectious Encephalitis
Central Nervous System Infections
Immunologic Factors
Physiological Effects of Drugs