A retrospective analysis of 3,442,996 individuals who either had same-day coadministration of the flu and COVID-19 vaccines between Aug. 31, 2022, and Jan. 30, 2023 — or received them separately were compared.
Of the total 627,735 who received both in the same-day, researchers found a “generally similar effectiveness in the community setting against COVID-19-related and SIV-related outcomes compared with giving each vaccine alone.”
They note that emphasizing the similar effectiveness when getting both at once or separately could improve the uptake of both vaccines.
