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InfluenzaPhase 1NCT05212623

A Clinical Trial of an Quadrivalent Inactivated Influenza Vaccine in Healthy Children Aged 6 to 35 Months

A Phase 1 study testing quadrivalent influenza split vaccine and Influenza virus split vaccine in people with Influenza, run by Jiangsu Province Centers for Disease Control and Prevention at 1 site in China.

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

In this single-center, randomized, blinded, positive-controlled design, the investigators will assess the safety and immunogenicity of 2 doses of an inactivated quadrivalent influenza vaccine in children aged 6 to 35 months. Read more about this study

Who is it for?
Ages 6 to 35 monthsHealthy volunteers can take part
Conditions the study is for
Influenza
What is being tested?
quadrivalent influenza split vaccine and Influenza virus split vaccine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
120 participants
Where
1 siteChina
Study dates
26 Oct 2021to 16 Jun 2022
Phase
Phase 1
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 6 to 35 months
  • All sexes
  • Healthy volunteers accepted
  • Child

Who may be able to join

  • Healthy infants and young children aged 6-35 months, provide vaccination certificate and birth medical certificate.
  • The subject or legal guardian can provide with informed consent and sign the informed consent form.
  • The subjects or legal guardians are able to and willing to use a thermometer, a scale and fill in a diary card/contact card as required, and be able to comply with the requirements of the clinical trial protocol to complete clinical research.

Who cannot join

  • st dose:
  • Axillary temperature>37.0℃
  • Participants aged 24-35 months, with abnormal blood routine, blood biochemical and urine routine indexes and judged by the researchers as having clinical significance.
  • Influenza within the past 3 months (confirmed clinically, serologically or microbiological).
  • Have previously received any influenza vaccine (registered or experimental) or planned to receive any influenza vaccine during the study.
  • Allergy to any component of the study vaccine, history of allergic reaction to eating eggs or using gentamicin sulfate.
Show all 27Show fewer
  • History of severe allergies to any vaccines or drugs.
  • Preterm (delivered before 37 weeks of gestation), low birth weight (birth weight <2500g) infants (only for volunteers aged 6 months to 12 months).
  • Dystocia, suffocation rescue, nervous system damage history.
  • Congenital malformations or developmental disorders affecting organ function, genetic defects, severe malnutrition, etc..
  • Acute illness, severe chronic illness, or acute exacerbation of chronic illness on the day of vaccination.
  • History of vaccination with the live attenuated vaccine within 14 days prior to vaccination and other vaccination within 7 days.
  • Those receiving immune enhancement or inhibitor therapy within 3 months (continuous oral or infusion for more than 14 days).
  • Have congenital or acquired immunodeficiency, HIV infection, lymphoma, leukemia, or other autoimmune diseases.
  • History of asthma, unstable in the past two years requiring urgent treatment, hospitalization, intubation, oral or intravenous corticosteroids.
  • Receive blood or blood-related products within 3 months.
  • Have a medical history or family history of convulsion, epilepsy, encephalopathy and psychosis.
  • History of coagulation abnormalities (eg, coagulation factor deficiency, coagulation disorder)
  • Plan to relocate before the end of the study or to be away from home for an extended period of time during scheduled study visits
  • Participating in or planning to participate in other clinical trials in the near future
  • Abnormal laboratory test indicators, except for minor abnormalities that have no clinical significance as judged by the doctor.
  • The investigator judges any situation that is inappropriate to participate in this clinical trial
  • nd dose:
  • Severe allergic reaction after the first dose of the vaccine.
  • Serious adverse reactions causally related to the first dose of the vaccine.
  • After the first vaccination, newly discovered or newly occurred do not meet the first-dose inclusion criteria or meet the first-dose exclusion criteria will be determined by the investigator whether to continue participating in the study.
  • Other reasons for exclusion in the opinion of the investigator.

Trial locations and contacts

1 site in 1 country.

China1 site
  • Jiangsu Province Centers for Disease Control and Prevention

    Nanjing, Jiangsu, 210009

Other trials in China

About this study

Official title: A Single-center, Randomized, Blinded, Positive Controlled Clinical Trial to Assess the Reactogenicity and Immunogenicity of a Quadrivalent Inactivated Influenza Vaccine in Healthy Participants Aged 6-35 Months

In this single-center, randomized, blinded, positive-controlled design, the investigators will assess the safety and immunogenicity of 2 doses of an inactivated quadrivalent influenza vaccine in children aged 6 to 35 months.

About 120 healthy participants are planned to be enrolled, of who 60 participants were enrolled in the low-dose group and 60 participants were enrolled in the high-dose group. In the low-dose group, participants were randomly (2:1:1) assigned to receive a quadrivalent inactivated influenza vaccine (IIV4) at 0.25 mL including A/H1N1, A/H3N2, B/Victoria, and B/Yamagata, and a trivalent inactivated influenza vaccine (IIV3) at 0.25 mL including A/H1N1, A/H3N2 and B/Victoria, and IIV3 at 0.25 mL including A/H1N1, A/H3N2, and B/Yamagata. In the high-dose group, participants were randomly (2:1:1) assigned to receive IIV4 at 0.5 mL, and IIV3 at 0.25 mL including A/H1N1, A/H3N2, and B/Victoria, and IV3 at 0.25 mL including A/H1N1, A/H3N2, and B/Yamagata. Subjects receive 2 doses of influenza vaccine 4 weeks apart.

The occurrence of adverse reactions within 30 minutes, the occurrence of adverse reactions within 28 days, and serious adverse events within 6 months after vaccination will be observed in all participants. For participants aged 24-35 months in each dose group, laboratory safety tests were measured before enrollment and on day 4 post each dose to assess any toxic effects. In addition, all subjects will be required to collect blood for HI antibody testing before the first dose of vaccination and 30 days after the second dose of vaccination.

Conditions
Influenza
Being tested
quadrivalent influenza split vaccine, Influenza virus split vaccine
Keywords
Influenza, quadrivalent influenza split vaccine, reactogenicity, immunogenicity
Medical subject headings
Influenza, Human

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • quadrivalent influenza split vaccineBiological

    This vaccine is produced by Changchun Sponsor Institute of Biological Products Co., Ltd. Subjects will receive two doses of quadrivalent influenza vaccine administered 4 weeks apart by intramuscular injection

  • quadrivalent influenza split vaccineBiological

    This vaccine is produced by Changchun Sponsor Institute of Biological Products Co., Ltd. Subjects will receive two doses of quadrivalent influenza vaccine administered 4 weeks apart by intramuscular injection

  • Influenza virus split vaccineBiological

    This vaccine is produced by Changchun Sponsor Institute of Biological Products Co., Ltd. Subjects will receive two doses of quadrivalent influenza vaccine administered 4 weeks apart by intramuscular injection

  • Influenza virus split vaccineBiological

    This vaccine is produced by Changchun Sponsor Institute of Biological Products Co., Ltd. Subjects will receive two doses of quadrivalent influenza vaccine administered 4 weeks apart by intramuscular injection.

Study groups in NCT05212623
Study groupRoleWhat they receive
Group AExperimentalSubjects received 2 doses of 0.25 mL of quadrivalent influenza vaccine, 4 weeks apart. Each 0.25-ml dose contained 7.5 μg of hemagglutinin per strain (Four types of virus strains: A/H1N1, A/H3N2, B/Victoria, and B/Yamagata).
Receives: Biological: quadrivalent influenza split vaccine
Group BExperimentalSubjects received 2 doses of 0.5 mL of quadrivalent influenza vaccine, 4 weeks apart. Each 0.5-ml dose contained 15 μg of hemagglutinin per strain.(Four types of virus strains: A/H1N1, A/H3N2, B/Victoria, and B/Yamagata).
Receives: Biological: quadrivalent influenza split vaccine
Group CActive comparatorSubjects received 2 doses of 0.25 mL of influenza vaccine, 4 weeks apart. Each 0.25-ml dose contained 7.5 μg of hemagglutinin per strain (3 type of virus strains, including BY).
Receives: Biological: Influenza virus split vaccine
Group DActive comparatorSubjects received 2 doses of 0.25 mL of influenza vaccine, 4 weeks apart. Each 0.25-ml dose contained 7.5 μg of hemagglutinin per strain (3 types of virus strains, including BV).
Receives: Biological: Influenza virus split vaccine

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Incidence of adverse events within 7 days after each vaccination in the participants aged 6-35 months. (Including abnormal laboratory test indicators and clinical significance)

    Incidence of adverse events within 7 days after each vaccination in the participants aged 6-35 months. (Including abnormal laboratory test indicators and clinical significance)

    Measured: On day 7 after each dose

Secondary outcomes (6)
  1. Incidence of adverse events from the first dose to 30 days after the second dose in the participants aged 6-35 months.

    Incidence of adverse events from the first dose to 30 days after the second dose in the participants aged 6-35 months.

    Measured: Time Frame: within 30 days after the second dose

  2. Incidence of serious adverse events (SAE) till the 6 months after the second dose in the participants aged 6-35 months.

    Incidence of serious adverse events (SAE) till the 6 months after the second dose in the participants aged 6-35 months.

    Measured: within 6 months after the second dose

  3. HI antibody-positive conversion rate in each group 30 days after the second vaccination in the participants aged 6-35 months.

    HI antibody-positive conversion rate in each group 30 days after the second vaccination in the participants aged 6-35 months.

    Measured: on day 30 after the second vaccination

  4. Seroprotection rate 30 days after the second dose in each group in the participants aged 6-35 months.

    Seroprotection rate 30 days after the second dose in each group in the participants aged 6-35 months.

    Measured: on day 30 after the second vaccination

  5. GMT of HI antibodies 30 days after the second dose of each group in the participants aged 6-35 months.

    GMT of HI antibodies 30 days after the second dose of each group in the participants aged 6-35 months.

    Measured: on day 30 after the second vaccination

  6. GMI of HI antibodies 30 days after the second dose of each group in the participants aged 6-35 months.

    GMI of HI antibodies 30 days after the second dose of each group in the participants aged 6-35 months.

    Measured: on day 30 after the second vaccination

Timeline

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

  1. First posted28 Jan 2022
  2. Study start26 Oct 2021
  3. Primary completion17 Jan 2022
  4. Study completion16 Jun 2022

Resources

More details

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

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
120 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05212623
Sponsor's protocol ID
LGYM(SJ)-2021-I
Status last verified
Mar 2022
First submitted
16 Jan 2022
Last updated
28 Oct 2022
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing quadrivalent influenza split vaccine and Influenza virus split vaccine in people with Influenza, run by Jiangsu Province Centers for Disease Control and Prevention at 1 site in China.

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 3 inclusion and 27 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 28 Oct 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. 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.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

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.

What does the primary outcome measure?

Incidence of adverse events within 7 days after each vaccination in the participants aged 6-35 months. (Including abnormal laboratory test indicators and clinical significance) (time frame: On day 7 after each dose). It is what the study was designed to measure, not a finding.

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 28 Oct 2022.

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