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Nasal Spray Vaccine Shows Promise Against COVID-19

2/25/2026

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Story summary
  • Researchers from Stanford University, Emory University, the University of North Carolina at Chapel Hill, Utah State University, and the University of Arizona developed a nasal spray vaccine named GLA-3M-052-LS+OVA.
  • In mice, it produced immunity lasting at least three months against SARS-CoV-2 and other viruses.
  • It stimulates the lungs' immune response by activating cells.
  • If human trials succeed, the vaccine could replace annual shots within five to seven years.