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Safety Surveillance of VaxigripTetra® and Efluelda® Influenza Vaccines in Europe During the Influenza Season 2022/23

Enhanced Passive Safety Surveillance of VaxigripTetra® (Quadrivalent Inactivated Split Virion Influenza Vaccine, Intramuscular Route) and Efluelda® (High-dose Quadrivalent Inactivated Split Virion Influenza Vaccine, Intramuscular Route) Vaccines in Europe During the Influenza Season 2022/23.

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05568979
Enrollment
1001
Registered
2022-10-06
Start date
2022-10-06
Completion date
2022-11-29
Last updated
2024-03-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Influenza (Healthy Volunteers)

Brief summary

This is an enhanced passive safety surveillance conducted in routine clinical care setting. Spontaneously reported ADRs will be collected by study staff following routine vaccination. The primary objective of this surveillance is to estimate the vaccinee reporting rate (RR) of suspected adverse drug reactions (ADRs) occurring within 7 days following routine vaccination with VaxigripTetra® and Efluelda®, respectively, during the Northern Hemisphere (NH) influenza season 2022/23. The secondary objectives of the study are: * To estimate the vaccinee reporting rate of suspected ADRs occurring within 7 days following routine vaccination with VaxigripTetra® and Efluelda®, respectively, according to the pre-defined age groups (not applicable for Efluelda®) * To estimate the vaccinee reporting rate of serious suspected ADRs after vaccination with VaxigripTetra® and Efluelda®, respectively, at any time following vaccination, within the EPSS

Detailed description

Study duration per participant 2 months (including 6 weeks for VC distribution + 2 weeks for vaccinee reporting) following the first vaccination

Interventions

Intramuscular or subcutaneous administration

Intramuscular administration

Sponsors

Sanofi Pasteur, a Sanofi Company
Lead SponsorINDUSTRY

Study design

Observational model
OTHER
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
6 Months to No maximum
Healthy volunteers
Yes

Inclusion criteria

* There are no formal inclusion criteria. Individuals who approach the site for vaccination and agree to receive a vaccination card will be included and vaccinated with the respective vaccine brand according to the country of their location, * recommendations for the individual vaccines as well as national recommendations

Exclusion criteria

* none

Design outcomes

Primary

MeasureTime frameDescription
Vaccinee reporting rate of suspected adverse drug reactions (ADRs) following routine vaccination with VaxigripTetra® and Efluelda®Within 7 days after vaccinationNumber of vaccinees who reported at least 1 suspected ADR divided by the total number of vaccination cards (VCs) distributed

Secondary

MeasureTime frameDescription
Vaccinees' reporting rate of ADRs according to age groupWithin 7 days after vaccination
Vaccinees' reporting rate of serious suspected ADRs at any time following vaccination within the EPSS periodFrom vaccination to end of data collection (maximum 2 months following first vaccination)Serious suspected ADRs will be collected from vaccination up to the end of data collection. Data collection ends when 1000 vaccination cards have been distributed (per vaccine brand) plus 2 weeks or 2 months following the first vaccination, whichever comes first.
Vaccinees' reporting rate of suspected ADR at any time following vaccination within the EPSS periodFrom vaccination to end of data collection (maximum 2 months following first vaccinationSuspected ADRs will be collected from vaccination up to the end of data collection. Data collection ends when 1000 vaccination cards have been distributed (per vaccine brand) plus 2 weeks or 2 months following the first vaccination, whichever comes first

Countries

Finland, Germany

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026