Safety and Immunogenicity of Inactivated Influenza Virus Vaccine Among Healthy Children 6-12 Weeks of Age (GRC28)
Safety and Immunogenicity of Fluzone Influenza Virus Vaccine (2005-2006 Formulation) Among Healthy Children 6 to 12 Weeks of Age
Přehled studie
Postavení
Podmínky
Intervence / Léčba
Detailní popis
Methods: A double-blind, randomized, placebo-controlled trial was conducted in 1375 healthy US infants 6-12 weeks of age. Subjects received either 2 doses of trivalent inactivated influenza vaccine (TIV, Fluzone®, sanofi pasteur 2005-6 pediatric formulation) (N=915) or placebo (N=460) 1 month apart, along with indicated concomitant vaccines. Solicited adverse events were collected for 7 days following each vaccination, unsolicited adverse events for 28 days, and serious adverse events for 6 months. Hemagglutination inhibition antibodies to all 3 vaccine strains were measured following the second TIV/placebo dose.
Results: No significant differences were seen between TIV and placebo groups for any safety outcomes. Fever ≥38oC rectal within 3 days of vaccination was seen in 11.2% vs 11.7% of TIV vs placebo recipients. Serious adverse events within 28 days of vaccine/placebo were reported in 1.9% of TIV and 1.5% of placebo recipients; only one (hypersensitivity reaction in a TIV recipient) was considered vaccine-related. Significantly increased antibody responses (p<0.001) were seen against all 3 strains in TIV recipients by titer ≥ 1:40 or geometric mean titer (GMT) (p<0.001). Altogether, 50% of infants had antibody titers ≥ 1:40 for H1N1, 86% for H3N2, and 11% for B compared with 7%, 10%, and 0.3% in the placebo group. The reciprocal GMT for influenza recipients was 33, 95, and 11 for H1N1, H3N2, and B vs. 7, 9, and 5 for placebo recipients. Over 90% of infants who received TIV had antibody ≥ 1:40 for at least one vaccine strain and 49.6% for 2 strains, vs. 16.4% and 0.9% in the placebo group.
Conclusions: TIV administered to young infants beginning at 6-12 weeks of age is safe and immunogenic.
Typ studie
Zápis (Aktuální)
Fáze
- Fáze 2
- Fáze 3
Kontakty a umístění
Studijní místa
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Washington
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Seattle, Washington, Spojené státy, 98105
- Seattle Children's Hospital and Regional Medical Center
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Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
Přijímá zdravé dobrovolníky
Pohlaví způsobilá ke studiu
Popis
Inclusion Criteria:
- Age 42 to 84 days on the day of inclusion
- Full term (born at >=36 weeks with birth weight >=2.5 kg
- Considered to be in good health
- Parental consent obtained and available
- Available for the study duration (6 months)
Exclusion Criteria:
- Reported allergy to egg proteins, chicken proteins
- Previous history of influenza vaccination or disease
- Receipt of any vaccine other than Hepatitis B prior to enrollment
- Acute illness with rectal temperature >= 38.0 (defer enrollment)
- Known bleeding disorder
- Participation in other interventional clinical trial within 30 days prior to enrollment
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Prevence
- Přidělení: Randomizované
- Intervenční model: Paralelní přiřazení
- Maskování: Čtyřnásobek
Zbraně a zásahy
Skupina účastníků / Arm |
Intervence / Léčba |
|---|---|
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Komparátor placeba: 1
0.25 ml normal saline placebo given as injection to infants at 2 and 3 months of age
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Children enrolled at 6-12 weeks to receive first dose, 0.25 ml of trivalent inactivated influenza vaccine, 2005-6 pediatric Fluzone formulation (sanofi pastuer), with concomitant routine pediatric vaccines.
Second dose administered 4 weeks later.
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Experimentální: 2
2005-6 Fluzone, pediatric formulation of trivalent inactivated influenza vaccine (sanofi pasteur) administered to infants at 2 and 3 months of age
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Children enrolled at 6-12 weeks to receive first dose, 0.25 ml of trivalent inactivated influenza vaccine, 2005-6 pediatric Fluzone formulation (sanofi pastuer), with concomitant routine pediatric vaccines.
Second dose administered 4 weeks later.
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Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Časové okno |
|---|---|
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To demonstrate the safety of Fluzone vaccine administered to 2-month old children
Časové okno: within 6 months
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within 6 months
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Spolupracovníci a vyšetřovatelé
Sponzor
Spolupracovníci
Vyšetřovatelé
- Studijní židle: Janet A Englund, MD, Seattle Children's Hospital
Publikace a užitečné odkazy
Obecné publikace
- Englund JA, Walter EB, Black S, et al. Safety and Immunogenicity of Fluzone Trivalent Inactivated Influenza Vaccine (TIV) in Infants 6-12 Weeks of Age. Presented at Infectious Disease Society of America (IDSA), Toronto, Oct. 14, 2006
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia
Primární dokončení (Aktuální)
Dokončení studie (Aktuální)
Termíny zápisu do studia
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Odhad)
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Odhad)
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Více informací
Termíny související s touto studií
Klíčová slova
Další relevantní podmínky MeSH
Další identifikační čísla studie
- 05065501
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