Negative Vaccine Immunity Proved: COVID-19 mRNA XBB.1.5 Vaccine Effectiveness Study in Quebec

This video analyzes a Quebec, Canada study on monovalent mRNA XBB.1.5 vaccine effectiveness against COVID-19 hospitalization, examining the concerning phenomenon of negative vaccine immunity over a 10-month follow-up period. Dr. John Campbell reviews research data showing how variant replacement and waning protection impact vaccine effectiveness, with particular focus on evidence suggesting that vaccine protection not only diminishes over time but may potentially become negative. Explore the implications of this scientific finding for public health policy and individual health decisions based on the preprint research published on medRxiv.