Immunogenicity of MF59-adjuvanted Versus High-dose Influenza Vaccine in People With HIV: a Randomized Clinical Trial
Seasonal influenza causes morbidity in people with impaired immunity, including adults with elder ages and other comorbidities [1]. Standard-dose inactivated influenza vaccines (IIV) may induce lower hemagglutination inhibition (HAI) titers and more rapid waning in these groups. High-dose IIV could generate higher and more durable serological responses, including HAI, B-cell activation and antibody magnitude, which was demonstrated in randomized trials [2,3]. MF59-adjuvanted IIV further enhances innate immune activation and antigen presentation, potentially broadening and strengthening responses, particularly during antigenic drift seasons [4]. These enhanced platforms represent biologically distinct strategies to overcome reduced vaccine responsiveness.
Influenza A/H3N2 was reported as the predominant circulating strain in Taiwan. Initial antigenic characterization suggested suboptimal match between some circulating A/H3N2 viruses (the subclade K variant) and the vaccine reference strain, whereas A/H1N1 viruses appeared consistency with the circulating and vaccine-containing strain [5]. As of February 2026, approximately 2,300 cases of severe influenza had been confirmed during the 2025-2026 season, representing the largest epidemic in the post-COVID-19 era. In the meanwhile, both MF59-adjuvanted and high-dose influenza vaccine were firstly introduced in Taiwan for elderly people [5].
Previous study had demonstrated that people living HIV (PWH) might have lower humoral immune responses compared with people without HIV, even among PWH with relatively higher (defined as ≥ 350 cells/mm3) CD4 counts [6]. In spite of the broad use of these novel influenza vaccines in older adults and other population with immunocompromised status such as the recipient of solid organ transplantation [7], evidence gap exists in PWH, where vaccine responses vary by CD4 count, viral suppression, immune activation, comorbidities, and prior vaccination history. High-dose influenza vaccination has shown improved serologic outcomes versus standard dose in PWH in randomized trials [2], while data of MF59-adjuvanted vaccines used for PWH are lacking. Moreover, comparative serological responses, durability or effectiveness between the two vaccines (MF59 adjuvant vs high-dose) was only conducted among participants with elder age, which showed that the seroconversion rate for H3N2 among those receiving MF59-adjuvanted vaccines did not meet noninferiority criteria compared with those receiving high-dose vaccines [8]. Nevertheless, such data on PWH remains unclear. In this study, we aimed to compare toe immunogenicity among PWH undergoing MF59-adjuvanted or high-dose seasonal influenza vaccine.
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Wang-Da Liu, M.D., M.P.H.
- Telefonnummer: +886-972-652797
- E-mail: b95401043@ntu.edu.tw
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- PWH aged ≥18 years
Exclusion Criteria:
- History of confirmed severe adverse effects owing to any type of influenza vaccine, including anaphylaxis and Guillain-Barré syndrome.
- Severe coagulopathy which causes contraindication for vaccination.
- Already vaccinated with any type of 2026-2027 influenza vaccines.
- Having diagnosed with influenza one month before vaccination.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Grundvidenskab
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: MF59-adjuvant vaccine
|
0.5ml/Vial, IM on Day1
|
|
Aktiv komparator: high-dose vaccine
|
0.5ml/Vial, IM on Day1
|
|
Aktiv komparator: egg-based vaccine
|
0.5ml/Vial, IM on Day1
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
The vaccine response rate among participants undergoing MF59-adjuvanted and high-dose influenza vaccines at day 28
Tidsramme: 1 month
|
The vaccine response rate among participants undergoing MF59-adjuvanted and high-dose influenza vaccines at day 28, defined as the proportion of patients exhibiting seroconversion for at least 1 viral strain (A/H1N1, A/H3N2, or B) contained in the trivalent vaccines at day 28 after vaccination.
Seroconversion was defined as a ≥ 4-fold increase of HAI titer from baseline.
|
1 month
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 202603137MIPA
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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