Nasal spray vaccine protects mice from multiple respiratory pathogens

A new nasal spray vaccine protected mice against multiple respiratory pathogens and allergens for at least three months. The vaccine activates the innate immune system, creating a broad defense against viruses like SARS-CoV-2, bacteria, and even allergens, potentially offering a first line of defense against future pandemics. This innovative approach builds on previous research into vaccines that supercharge the innate immune system, aiming for a more general and rapid immune response.