PMID- 36991538 OWN - NLM STAT- MEDLINE DCOM- 20230331 LR - 20230508 IS - 1750-2659 (Electronic) IS - 1750-2640 (Print) IS - 1750-2640 (Linking) VI - 17 IP - 3 DP - 2023 Mar TI - Enhanced safety surveillance of GSK's quadrivalent seasonal influenza vaccine in Germany and Spain (2021/2022 season) using an electronic patient-reported outcome system for vaccine safety remote monitoring. PG - e13098 LID - 10.1111/irv.13098 [doi] LID - e13098 AB - BACKGROUND: Seasonal influenza epidemics are managed through vaccination each winter in the European Union, to prevent infections, complications, and deaths. As circulating virus strains vary unpredictably, vaccines are reformulated annually, and their safety monitored rapidly and continuously at the start of each season, following European Medicines Agency guidelines.Seasonal influenza epidemics are managed through vaccination each winter in the European Union, to prevent infections, complications, and deaths. As circulating virus strains vary unpredictably, vaccines are reformulated annually, and their safety monitored rapidly and continuously at the start of each season, following European Medicines Agency guidelines. METHODS: This enhanced safety surveillance study assessed pre-specified and other adverse events (AEs) occurring within 7 days of GSK's inactivated quadrivalent seasonal influenza vaccine (IIV4) in children and adults in Spain and Germany. As the study was conducted during the COVID-19 pandemic (2021/2022 season), data were collected electronically, using a web portal or call center. RESULTS: Safety was assessed in 737 participants (median age 49 and 9 years in Germany and Spain, respectively, 19.3% with a chronic medical condition). After Dose 1 and Dose 2, respectively, 332 (45.1%) and 5 (26.3%) participants reported at least one AE, primarily pre-specified AEs. The most common AEs after Dose 1 (adults and children) were injection site pain, swelling or erythema, headache, and fatigue. After Dose 2 (in children), the most common AEs were injection site pain, rhinorrhea, fatigue, and decreased appetite. No new or unexpected safety issues were identified. CONCLUSION: This study supports and confirms the safety profile of GSK's IIV4 in all age groups with a vaccine indication. The new electronic safety reporting method (with response rates of 75.4% following Dose 1 and 100% following Dose 2) provides an alternative for future studies to reduce the burden on sites or in case site visits are not feasible. CI - (c) 2023 GlaxoSmithKline Biologicals SA. Influenza and Other Respiratory Viruses published by John Wiley & Sons Ltd. FAU - Dos Santos, Gael AU - Dos Santos G AUID- ORCID: 0000-0001-8623-3478 AD - GSK, Wavre, Belgium. FAU - Eckermann, Tamara AU - Eckermann T AD - Hausarztpraxis Heimeranplatz, Munich, Germany. FAU - Martinez-Gomez, Xavier AU - Martinez-Gomez X AUID- ORCID: 0000-0003-4583-9734 AD - Hospital Universitari Vall d'Hebron, Barcelona, Spain. FAU - Parra, Jose AU - Parra J AUID- ORCID: 0000-0002-5152-4715 AD - GSK, Wavre, Belgium. FAU - Nwoji, Ugo AU - Nwoji U AUID- ORCID: 0000-0002-2946-703X AD - GSK, Rockville, Maryland, USA. FAU - Salamanca de la Cueva, Ignacio AU - Salamanca de la Cueva I AUID- ORCID: 0000-0003-0561-9913 AD - Instituto Hispalense de Pediatria, Sevilla, Spain. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Influenza Other Respir Viruses JT - Influenza and other respiratory viruses JID - 101304007 RN - 0 (Influenza Vaccines) SB - IM MH - Child MH - Adult MH - Humans MH - *Influenza Vaccines MH - *Influenza, Human/prevention & control/epidemiology MH - Spain/epidemiology MH - Seasons MH - Pandemics/prevention & control MH - *COVID-19/epidemiology MH - Germany/epidemiology MH - Patient Reported Outcome Measures PMC - PMC10040952 OTO - NOTNLM OT - influenza OT - post-marketing surveillance OT - safety OT - vaccination COIS- Gael Dos Santos is employed by GSK and holds shares in GSK. Tamara Eckermann declares that her institution received payment from GSK for the conduct of the study. Jose Parra and Ugo Nwoji were employed by GSK at the time of the study. Xavier Martinez-Gomez declares having received payment from GSK for slide materials and from AstraZeneca for lecture, outside of the submitted work. Ignacio Salamanca de la Cueva declares that his institution received payment from GSK for the conduct of the study, by contract approved by the corresponding ethical committees and health authorities, and outside of this study, for other trials from other vaccine manufacturers. He has also received grants/honoraria as a consultant/advisor/speaker for attending conferences and practical courses from GSK and other vaccine manufacturers. The authors declare no other financial and non-financial relationships and activities. EDAT- 2023/03/31 06:00 MHDA- 2023/03/31 06:41 PMCR- 2023/03/26 CRDT- 2023/03/30 00:03 PHST- 2022/12/14 00:00 [received] PHST- 2023/01/10 00:00 [accepted] PHST- 2023/03/31 06:41 [medline] PHST- 2023/03/30 00:03 [entrez] PHST- 2023/03/31 06:00 [pubmed] PHST- 2023/03/26 00:00 [pmc-release] AID - IRV13098 [pii] AID - 10.1111/irv.13098 [doi] PST - ppublish SO - Influenza Other Respir Viruses. 2023 Mar;17(3):e13098. doi: 10.1111/irv.13098.