InfluenzaNCT01096238
Follow-up of Immunogenicity of Influenza Virus Vaccine, AdimFlu-S (A/H1N1), in Healthy Volunteers After 6 Months
An observational study of Influenza, run by National Taiwan University Hospital.
Trial summary
In the spring of 2009, a recently emerged novel influenza A (H1N1) virus was first identified in Mexico and USA and it has continued to spread globally. The rapid global spread of a novel influenza A (H1N1) 2009 virus prompted the World Health Organization (WHO), on 11 June 2009, to declare the first influenza… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Influenza
- How many people
- 185 participants
- Where
- No sites listed yet
- Study dates
- Mar 2010to not given
- 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 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: age>=18 who had AdimFlu-S(A/H1N1) injection
Who may be able to join
- subjects with serum HAI titer had at least 1:40 at least 3 weeks after AdimFlu-S (A/H1N1) injection
Who cannot join
None listed.
About this study
In the spring of 2009, a recently emerged novel influenza A (H1N1) virus was first identified in Mexico and USA and it has continued to spread globally. The rapid global spread of a novel influenza A (H1N1) 2009 virus prompted the World Health Organization (WHO), on 11 June 2009, to declare the first influenza pandemic in 41 years. In Taiwan, a clinical study to assess the immunogenicity and safety of Influenza Virus Vaccine, AdimFlu-S (A/H1N1), in healthy volunteers has already been completed. In the previous study, we found that a single 15 mcg HA dose of the AdimFlu-S (A/H1N1) vaccine induces a protective immune response in most adults, including those > 60 years of age (>70%). Our current study aims to follow-up subjects who received Influenza Virus Vaccine, AdimFlu-S (A/H1N1), six months ago. These subjects' serum samples were tested for anti-hemagglutinin (HA) antibodies by hemagglutination inhibition (HAI). The seroconversion is defined as the post-vaccination serum HAI titer had at least 1:40 for subjects who had seronegative pre-vaccination or a four-fold or greater increase in HAI titers for subjects who had seropositive pre-vaccination serum. The immunogenicity of Influenza Virus Vaccine, AdimFlu-S (A/H1N1), in adults after half a year will be analyzed and discussed among the subjects with serum HAI titer had at least 1:40 at least 3 weeks after AdimFlu-S (A/H1N1) injection.
- Conditions
- Influenza
- Keywords
- The immunogenicity of Influenza Virus Vaccine, AdimFlu-S (A/H1N1), in adults after half a year will be analyzed and discussed.
- Medical subject headings
- Influenza, Human
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted31 Mar 2010 (estimated)
- Study startMar 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for InfluenzaStudies of the same condition, open and under way.
- More trials run by National Taiwan University HospitalThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Enrolment
- 185 participants (estimated)
Sponsor and investigators
- Lead sponsor
- National Taiwan University Hospital
- Sponsor type
- University, hospital or other
- Investigators
- Kuo-Chin Huang, Post Doctor, Principal investigator, National Taiwan University Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01096238
- Sponsor's protocol ID
- 201002050R
- Status last verified
- Apr 2010
- First submitted
- 29 Mar 2010
- Last updated
- 13 Apr 2010
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 13 Apr 2010. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Follow-up of Immunogenicity of Influenza Virus Vaccine, AdimFlu-S (A/H1N1), in Healthy Volunteers After 6 Months
- ClinicalTrials.gov ID
- NCT01096238
- Acronym / sponsor ID
- 201002050R
- Conditions
- Influenza
- Keywords
- The immunogenicity of Influenza Virus Vaccine, AdimFlu-S (A/H1N1), in adults after half a year will be analyzed and discussed.
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 185 participants (estimated)
- Lead sponsor
- National Taiwan University HospitalUniversity, hospital or other
- Study start
- Mar 2010
- First posted
- 31 Mar 2010 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
In the spring of 2009, a recently emerged novel influenza A (H1N1) virus was first identified in Mexico and USA and it has continued to spread globally. The rapid global spread of a novel influenza A (H1N1) 2009 virus prompted the World Health Organization (WHO), on 11 June 2009, to declare the first influenza pandemic in 41 years. In Taiwan, a clinical study to assess the immunogenicity and safety of Influenza Virus Vaccine, AdimFlu-S (A/H1N1), in healthy volunteers has already been completed. In the previous study, we found that a single 15 mcg HA dose of the AdimFlu-S (A/H1N1) vaccine induces a protective immune response in most adults, including those > 60 years of age (>70%). Our current study aims to follow-up subjects who received Influenza Virus Vaccine, AdimFlu-S (A/H1N1), six months ago. These subjects' serum samples were tested for anti-hemagglutinin (HA) antibodies by hemagglutination inhibition (HAI). The seroconversion is defined as the post-vaccination serum HAI titer had at least 1:40 for subjects who had seronegative pre-vaccination or a four-fold or greater increase in HAI titers for subjects who had seropositive pre-vaccination serum. The immunogenicity of Influenza Virus Vaccine, AdimFlu-S (A/H1N1), in adults after half a year will be analyzed and discussed among the subjects with serum HAI titer had at least 1:40 at least 3 weeks after AdimFlu-S (A/H1N1) injection.
Study design
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- age>=18 who had AdimFlu-S(A/H1N1) injection
Key inclusion criteria (1 listed)
- subjects with serum HAI titer had at least 1:40 at least 3 weeks after AdimFlu-S (A/H1N1) injection
Key exclusion criteria (0 listed)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Apr 2010.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Kuo-Chin Huang, Post Doctor principal investigator
National Taiwan University Hospital
Questions about this trial
What is this clinical trial studying?
An observational study of Influenza, run by National Taiwan University Hospital.
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 0 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: status not confirmed, as of the sponsor's last update on 13 Apr 2010. Status can change between updates, so confirm with the study contact before making plans.
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?
Results are not available in the source record.
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?
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 13 Apr 2010.