Biotechnology New peer-reviewed data published in The Lancet Infectious Diseases report results from a Phase III study of 7,699 adults aged 50+ across eight countries, evaluating Australia’s CSL Ltd’s subsidiary CSL Seqirus' MF59-adjuvanted, cell-based, higher-dose quadrivalent influenza vaccine (aQIVc). aQIVc is the quadrivalent formulation of the trivalent vaccine aTIVc, and the findings of this study extrapolate to the trivalent formulation. 11 September 2026