Concurrent Bivalent COVID-19 Booster, Inactivated Influenza Vaccine Administration Improves SARS-CoV-2 Response While Maintaining Response Against Flu, Study Finds

Infectious Disease Advisor (5/6, Nye) reports, “Concurrent administration of the bivalent COVID-19 booster and the inactivated influenza vaccine may result in higher and more durable neutralizing antibody (nAb) responses against SARS-CoV-2 while maintaining responses against influenza, according to study results published in Open Forum Infectious Diseases.” In the study, “patients in the concurrent administration group exhibited increased IgG1 responses to all Spike variants relative to those in the separate administration group. They also exhibited increased pseudovirus neutralization to both BA.5 and XBB.1.5 at the time of peak immunogenicity and at 6 months.”