Effect of Age and Prior Immunity on Response to H1N1 Vaccines in Children

NCT ID: NCT01097941

Last Updated: 2015-09-24

Basic Information

• Recruitment Status: WITHDRAWN
• Clinical Phase: PHASE4
• Study Classification: INTERVENTIONAL
• Study Start Date: 2010-03-31
• Study Completion Date: 2010-09-30

Brief Summary

A total of 51 children between the ages of 4 and 9 will be randomized to receive a two dose schedule of either licensed live attenuated A/California/07/09 influenza vaccine (LAIV) or licensed inactivated A/California/07/09 influenza vaccine (IIV) or IIV followed by LAIV separated by 28 days. Children with prior vaccination or natural infection with novel H1N1 influenza will be excluded. Randomization will be stratified by pre-existing HAI titers to the previous winter's seasonal H1N1 A/Brisbane/57/07 reference virus.

Detailed Description

The study will be conducted as a randomized, prospective, open-label evaluation of the clinical tolerability, vaccine virus shedding, and serum and mucosal antibody response to vaccination with either live monovalent novel H1N1 influenza vaccine (LAIV) or monovalent inactivated novel H1N1 influenza vaccine (IIV) in healthy children between the ages of 4 and 9 years. Children will be screened for antibody to A/Brisbane/57/07 (H1N1) and A/California/07/09 (H1N1) prior to randomization. Children with evidence of prior exposure to the 2009 pandemic H1N1 virus will be excluded. Those with antibodies to A/Brisbane/57/07 (H1N1) will be stratified by preexisting antibody. Vaccine will be administered on days 0 and 28.

Safety of vaccination will be assessed using symptoms collected by parents for 7 days after each dose of vaccine. Serum will be obtained prior to and on day 28 following each dose of vaccine and assessed for antibody by HAI, ELISA, B-cell ELISPOT and neutralization techniques. Nasal secretions will be obtained by nasal aspiration prior to and on day 28 after each dose and assessed for HA-specific IgA antibody by ELISA. Nasal swabs will be obtained on days 2, 4, and 7 after each dose of live vaccine and assessed for the presence and magnitude of vaccine virus shedding of the live attenuated vaccine by rtRT-PCR and TCID50 on MDCK cells.

Conditions

2009 H1N1 Influenza

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

LAIV/LAIV

Group Type: ACTIVE_COMPARATOR

Live Attenuated H1N1 Influenza Vaccine

Intervention Type: BIOLOGICAL

0.2 ml dose of live monovalent vaccine delivered through nasal spray, 2 doses given 28 days apart

IIV/IIV

Group Type: ACTIVE_COMPARATOR

Influenza A (H1N1) 2009 Monovalent Vaccine

Intervention Type: BIOLOGICAL

0.5 ml IM, 2 doses given 28 days apart

IIV/LAIV

Group Type: ACTIVE_COMPARATOR

Influenza A (H1N1) 2009 Monovalent Vaccine/ Influenza A (H1N1) Monovalent Vaccine Live

Intervention Type: BIOLOGICAL

0.5 ml IM given X1 with 0.1 ml intranasally given 28 days later

Interventions

Live Attenuated H1N1 Influenza Vaccine

0.2 ml dose of live monovalent vaccine delivered through nasal spray, 2 doses given 28 days apart

Intervention Type: BIOLOGICAL

Influenza A (H1N1) 2009 Monovalent Vaccine

0.5 ml IM, 2 doses given 28 days apart

Intervention Type: BIOLOGICAL

Influenza A (H1N1) 2009 Monovalent Vaccine/ Influenza A (H1N1) Monovalent Vaccine Live

0.5 ml IM given X1 with 0.1 ml intranasally given 28 days later

Intervention Type: BIOLOGICAL

Other Intervention Names

Influenza A (H1N1) 2009 Monovalent Vaccine Live, Intranasal; Influenza vaccine; Influenza Vaccine

Eligibility Criteria

Inclusion Criteria

• Aged between 4 and 9 years, inclusive.
• Pre-vaccination serum HAI titer to A/California/07/09 of 8 or less
• No prior history of laboratory documented infection with novel H1N1 virus or immunization with novel H1N1 vaccine.
• in good health, as determined by: vital signs (heart rate <140 bpm; blood pressure: systolic ≥ 90 mm Hg and ≤140 mm Hg; diastolic ≤ 90 mm Hg; oral temperature <100.0ºF); medical history; and targeted physical examination, when necessary, based on medical history. Stable medical condition is defined as: no recent increase in prescription medication, dose, or frequency of medication in the last 3 months and health outcomes of the specific disease are considered to be within acceptable limits in the last 6 months.
• subject/parents are able to understand and comply with the planned study procedures, including being available for all study visits.
• subject/parents have provided informed consent prior to any study procedures. (An assent will be obtained for all children 6 years and older)

Exclusion Criteria

• a previous history of vaccination against novel H1N1 virus or a laboratory documented history of previous novel H1N1 infection.
• History of egg allergy or allergy to other components of vaccine.
• History of wheezing.
• immunosuppressed as a result of an underlying illness or treatment with immunosuppressive or cytotoxic drugs, or use of anticancer chemotherapy or radiation therapy.
• has an active neoplastic disease.
• has long-term (greater than 2 weeks) use of oral or parenteral steroids, or high-dose inhaled steroids (>800 mg/day of beclomethasone dipropionate or equivalent) within the preceding 6 months (nasal and topical steroids are allowed).
• received immunoglobulin or another blood product within the 3 months prior to enrollment in this study.
• has received an inactivated vaccine within the 2 weeks or a live vaccine within the 4 weeks prior to enrollment in this study or plans to receive another vaccine within the next 28 days (or 56 days for vaccine naïve recipients).
• has an acute or chronic medical condition that, in the opinion of the investigator, would render vaccination unsafe or would interfere with the evaluation of responses. These conditions include chronic conditions recognized as risk factors for influenza complications or as contraindications for live vaccination, including chronic cardiac (exclusive of hypertension) or pulmonary conditions (including asthma), diabetes mellitus, or renal impairment.
• has an acute illness or an oral temperature greater than 99.9 degrees F (37.7 degrees C) within 3 days prior to enrollment or vaccination. Subjects who had an acute illness that was treated symptoms resolved are eligible to enroll as long as treatment is completed and symptoms resolve > 3 days prior to enrollment.
• is currently participating or plans to participate in a study that involves an experimental agent (vaccine, drug, biologic, device, blood product, or medication) or has received an experimental agent within 1 month prior to enrollment in this study, or expects to receive another experimental agent during participation in this study, or intends to donate blood during the study period.
• has any condition that would, in the opinion of the site investigator, place the subject at an unacceptable risk of injury or render the subject unable to meet the requirements of the protocol.
• has a known human immunodeficiency virus, hepatitis B, or hepatitis C infection.
• has a previous history of Guillain-Barré syndrome within 6 weeks of receipt of influenza vaccination.
• has any condition that the principal investigator (PI) believes may interfere with successful completion of the study.

• Minimum Eligible Age: 4 Years
• Maximum Eligible Age: 9 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

National Institutes of Health (NIH)

NIH

Sponsor Role: collaborator

University of Rochester

OTHER

Sponsor Role: lead

Responsible Party

John Treanor

Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

John J Treanor, MD

Role: PRINCIPAL_INVESTIGATOR

University of Rochester

Locations

University of Rochester Medical Center, Vaccine Research Unit Room 3-5000

Rochester, New York, United States

Countries

United States

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Other Identifiers

URMC 09-007

Identifier Type: -

Identifier Source: org_study_id