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CompletedNCT00163540Updated May 21, 2015

Immunogenicity and Safety Study of a Third Vaccination With FSME-IMMUN 0.5 mL in Subjects Previously Vaccinated According to a Rapid Immunization Schedule (Follow-up to Study 225)

A Phase 4 interventional study of Formaldehyde inactivated, sucrose gradient purified TBE virus antigen, strain Neudörfl in Encephalitis, Tick-borne, sponsored by Pfizer. Completed at 1 site in Belgium. Open to participants aged 17 Years to 66 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2015-05-21.

Sponsored by Pfizer · Phase 4, Interventional, and Prevention

Phase
Phase 4
Study type
Interventional
Allocation
Non-randomized
Ages
17 Years to 66 Years
Sex
All
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Study summary

The objective of this study is to investigate the immunogenicity and safety of a third vaccination with FSME-IMMUN 0.5 ml given approximately 12 months after the second vaccination in Study 225. In Study 225, two vaccinations were given using a rapid immunization schedule 12 ± 2 days apart.

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Conditions studied

  • Encephalitis, Tick-borne

Keywords

  • tick-borne encephalitis
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In context

Encephalitis, Tick-Borne

51 studies on the registry are indexed under Encephalitis, Tick-Borne; 9 are open to participants now.

Browse Encephalitis, Tick-Borne studies →

Lead sponsor

Pfizer is the lead sponsor of 3,334 studies on the registry; 149 are open to participants now.

Of its 601 completed or terminated interventional studies of FDA-regulated products, 391 (65%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
17 Years to 66 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Male and female subjects who:
  • received 2 vaccinations with FSME-IMMUN 0.5 ml during Study 225
  • understand the nature of the study, agree to its provisions and provide written
  • are clinically healthy (i.e. the physician would have no reservation vaccinating with FSME-IMMUN 0.5 ml outside the scope of the clinical trial)
  • have a negative pregnancy test result at the first medical examination (if female and capable of bearing children)
  • agree to employ adequate measures for the duration of the study (if female and capable of bearing children)
  • agree to keep a Subject Diary

Exclusion criteria

Exclusion Criteria:

Subjects who:

  • have already been administered a third TBE vaccination elsewhere since receiving two vaccinations in Study 225
  • have a history of infection with, or vaccination against, other flaviviruses since participation in Study 225 (e.g. yellow fever, dengue fever, japanese B encephalitis)
  • have had an allergic reaction to one of the components of the vaccine since participation in Study 225
  • suffer from a disease (e.g. disease, immunodeficiency) or are undergoing a form of treatment (e.g., systemic ) that can be expected to influence immunological functions
  • have a known or suspected problem with drug or alcohol abuse (>4 liters wine/week or equivalent doses of other alcoholic beverages)
  • have donated blood or plasma within 30 days of study entry
  • have received a blood transfusion or immunoglobulins within 30 days of study entry
  • are known to be positive (an HIV test is not required specifically for this study)
  • are simultaneously participating in another clinical trial including administration of an product
  • have participated in any other clinical study within 6 weeks prior to study start
  • have participated in another Baxter vaccine study in the past 6 months (with the exception of follow-up studies)
  • For female subjects: pregnancy or lactation
Terms in these criteria, in plain language(6)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

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Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)

Interventions

  • BiologicalFormaldehyde inactivated, sucrose gradient purified TBE virus antigen, strain Neudörfl
06

Study locations

1 site
  • SGS Biopharma Research Unit Stuivenberg
    Antwerp, 2060, Belgium
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References and documents

Publications

  • Orlinger KK, Hofmeister Y, Fritz R, Holzer GW, Falkner FG, Unger B, Loew-Baselli A, Poellabauer EM, Ehrlich HJ, Barrett PN, Kreil TR. A tick-borne encephalitis virus vaccine based on the European prototype strain induces broadly reactive cross-neutralizing antibodies in humans. J Infect Dis. 2011 Jun 1;203(11):1556-64. doi: 10.1093/infdis/jir122. PubMed 21592984 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 21, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00163540
Lead sponsor
Pfizer
First posted
Sep 14, 2005
Start date
May 2005
Completion
Jun 2005
Last update
May 21, 2015

Study contacts

Baxter BioScience Investigator, MD
principal investigator · Baxter BioScience
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in May 2015. You cannot join it, but the record below documents what was studied.

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