University of Gothenburg Apr 23 2026 Memory cells in the nose slow the influenza virus as soon as it enters the body. They reduce viral levels and may help protect against more severe illness. The study from the University of Gothenburg may help guide the development of better influenza vaccines.  Today's influenza vaccines are given as injections in the arm and mainly stimulate immune responses in the blood. At the same time, researchers are working to develop influenza vaccines that can be