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Evaluation of immunogenicity of influenza vaccine in children

Evaluation of immunogenicity of influenza vaccine in children

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
CRIS
Registry ID
KCT0006127
Enrollment
130
Registered
2021-05-11
Start date
2018-10-02
Completion date
Unknown
Last updated
2021-05-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Interventions

None listed

Sponsors

Korea University Ansan Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Healthy children of 6 months to under 6 years of age : For children under 1 year of age, if the gestation period is more than 37 weeks 2) Those who understand the clinical trial and agree to participate in the clinical trial

Exclusion criteria

Exclusion criteria: 1) Persons suffering from immunodeficiency disease or malignant tumors 2) Those with a history of hypersensitivity during vaccination such as Guillain-Barre syndrome 3) Thrombocytopenia or other clotting disorders that should not be given intramuscular injection 4) Those who have a body temperature exceeding 38°C within 72 hours from the day of inoculation of the investigational drug or suffer from a feverish disease (body temperature exceeding 38°C) on the day of inoculation 5) Those who took the following immunosuppressants/immunomodulators within 3 months of screening (Cyclophophamide, 6-mercaptopurine, azathioprine, methotrexate, steroids, cyclosporine A, rapamycin, leflunomide, etc.) Biological treatments such as metabolites, monoclonal antibodies, anti-lymphocyte serum, etc., radiation therapy, etc. inhaled), intranasal and topical administration of steroids is allowed) 6) Those who received blood products/immunoglobulins within 3 months before the screening test date 7) Those who have been vaccinated against influenza vaccine within 6 months before the screening test date 8) Those who have participated in other clinical trials within 4 weeks before the inoculation date of the investigational drug and have inoculated or taken the investigational drug 9) Persons suffering from severe chronic diseases that make it difficult to participate in clinical trials 10) A person who judges that the investigator is unsuitable for participation in the clinical trial due to other reasons including clinically significant medical or psychiatric finding

Design outcomes

Primary

MeasureTime frame
1.Seroprotection rate-After vaccination, calculate the proportion of subjects whose HI titer increased to 1:40 or higher. 2. Seroconversion rate-Calculate the proportion of subjects who satisfy one of the following. -If HI titer <1:10 before vaccination, subjects with HI titer = 1:40 after vaccination 3. Geometric Mean Ratio-Calculate the geometric mean increase rate of HI titer before and after vaccination

Secondary

MeasureTime frame
1.Seroprotection rate-After vaccination, calculate the proportion of subjects whose HI titer increased to 1:40 or higher. 2. Seroconversion rate-Calculate the proportion of subjects who satisfy one of the following. -If HI titer <1:10 before vaccination, subjects with HI titer = 1:40 after vaccination 3. Geometric Mean Ratio-Calculate the geometric mean increase rate of HI titer before and after vaccination

Countries

Korea, Republic of

Contacts

Public Contactinkyoung choi

Korea University Ansan Hospital

hscik@naver.com+82-31-412-4844

Outcome results

None listed

Source: CRIS (via WHO ICTRP) · Data processed: Feb 4, 2026