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Retrospective Analysis of the Second Year of Safety Surveillance of the Qdenga® (TAK-003) Vaccine in Private Vaccination Centers, Including a Sub-analysis of Safety in Adults Over 60 Years of Age

Sponsor: Fundación Vacunar

Summary

The TAK-003 vaccine, Qdenga, developed by Takeda, was approved by ANMAT in April 2023 and has been available in Argentina since November 2023 for individuals aged 4 years and older, with no upper age limit. Clinical trials demonstrate that Qdenga has a favorable safety and immunogenicity profile in individuals with and without prior dengue infection. However, real-world safety evidence remains limited, particularly in adults over 60 years of age. The aim of this study is to evaluate adverse events following immunization (AEFI) associated with TAK-003 during the second year of implementation and across the combined two-year period at private vaccination centers in the Buenos Aires metropolitan area, with a particular focus on older adults and hypersensitivity reactions.

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