tetano
Editor, Senior Moderator
Hum Vaccin Immunother. 2014 Apr 14;10(6). [Epub ahead of print]
A dose-range study in older adults to compare the safety and immunogenicity profiles of MF59?-adjuvanted and non-adjuvanted seasonal influenza vaccines following intradermal and intramuscular administration.
Della Cioppa G1, Nicolay U1, Lindert K1, Leroux-Roels G2, Cl?ment F2, Castellino F1, Galli G1, Groth N1, Levin Y3, Del Giudice G1.
Author information
Abstract
Strategies to optimize responses to seasonal influenza vaccination in older adults include the use of adjuvants, higher antigen doses, and intradermal delivery. In this study adults aged ≥ 65 years (n = 450) received a single dose of one of two non-adjuvanted trivalent influenza vaccine (TIV) formulations administered intradermally (ID), both containing 6 ?g of A/H1N1 and B, differing in A/H3N2 content (6 ?g or 12 ?g), or a single dose of one of eight TIV formulations administered intramuscularly (IM) all containing 15 ?g of A/H1N1 and B, differing in A/H3N2 hemagglutinin (HA) content (15 ?g or 30 ?g) and/or in MF59? adjuvant content (0%, 25%, 50%, or 100% of the standard dose). This paper focuses on the comparisons of low-dose non-adjuvanted ID, full-dose non-adjuvanted IM and full-dose MF59-adjuvanted IM formulations (n = 270). At Day 22 post-vaccination, at least one European licensure immunogenicity criterion was met by all groups against all three strains; however, all three criteria were met against all three vaccine strains by the low-dose non-adjuvanted ID and the full-dose MF59-adjuvanted IM groups only. The full-dose MF59-adjuvanted IM group elicited significantly higher immune response vs. the low-dose non-adjuvanted ID formulations for most comparisons. The full-dose MF59 adjuvanted groups were associated with increased pain at the site of injection (P<0.01), and the low-dose non-adjuvanted ID groups were associated with increased erythema, induration, and swelling at the injection site compared with the IM groups (P<0.0001). There were no differences between IM and ID groups in the frequencies of subjects experiencing solicited systemic reactions. Overall, while MF59 adjuvantation increased pain at the site of injection, and intradermal delivery increased unsolicited adverse events, erythema, induration, and swelling at the injection site, both strategies of vaccination strongly enhanced the immunogenicity of seasonal influenza vaccine in older adults compared with conventional non-adjuvanted intramuscular delivery. Trial registration : www.clinicaltrials.gov: NCT00848848.
KEYWORDS:
Adjuvant, Influenza, Intradermal, MF59, Seasonal, Vaccine
PMID:
24732325
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/24732325
A dose-range study in older adults to compare the safety and immunogenicity profiles of MF59?-adjuvanted and non-adjuvanted seasonal influenza vaccines following intradermal and intramuscular administration.
Della Cioppa G1, Nicolay U1, Lindert K1, Leroux-Roels G2, Cl?ment F2, Castellino F1, Galli G1, Groth N1, Levin Y3, Del Giudice G1.
Author information
Abstract
Strategies to optimize responses to seasonal influenza vaccination in older adults include the use of adjuvants, higher antigen doses, and intradermal delivery. In this study adults aged ≥ 65 years (n = 450) received a single dose of one of two non-adjuvanted trivalent influenza vaccine (TIV) formulations administered intradermally (ID), both containing 6 ?g of A/H1N1 and B, differing in A/H3N2 content (6 ?g or 12 ?g), or a single dose of one of eight TIV formulations administered intramuscularly (IM) all containing 15 ?g of A/H1N1 and B, differing in A/H3N2 hemagglutinin (HA) content (15 ?g or 30 ?g) and/or in MF59? adjuvant content (0%, 25%, 50%, or 100% of the standard dose). This paper focuses on the comparisons of low-dose non-adjuvanted ID, full-dose non-adjuvanted IM and full-dose MF59-adjuvanted IM formulations (n = 270). At Day 22 post-vaccination, at least one European licensure immunogenicity criterion was met by all groups against all three strains; however, all three criteria were met against all three vaccine strains by the low-dose non-adjuvanted ID and the full-dose MF59-adjuvanted IM groups only. The full-dose MF59-adjuvanted IM group elicited significantly higher immune response vs. the low-dose non-adjuvanted ID formulations for most comparisons. The full-dose MF59 adjuvanted groups were associated with increased pain at the site of injection (P<0.01), and the low-dose non-adjuvanted ID groups were associated with increased erythema, induration, and swelling at the injection site compared with the IM groups (P<0.0001). There were no differences between IM and ID groups in the frequencies of subjects experiencing solicited systemic reactions. Overall, while MF59 adjuvantation increased pain at the site of injection, and intradermal delivery increased unsolicited adverse events, erythema, induration, and swelling at the injection site, both strategies of vaccination strongly enhanced the immunogenicity of seasonal influenza vaccine in older adults compared with conventional non-adjuvanted intramuscular delivery. Trial registration : www.clinicaltrials.gov: NCT00848848.
KEYWORDS:
Adjuvant, Influenza, Intradermal, MF59, Seasonal, Vaccine
PMID:
24732325
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/24732325