Single vaccine could protect against all coughs, colds and flus, researchers say

Stanford University researchers have developed a nasal spray vaccine that could protect against all coughs, colds, flus, and bacterial lung infections, and may even ease allergies. The vaccine, which marks a radical departure from traditional vaccine design, has been tested in animals and awaits human clinical trials. If successful, it could offer broad protection against respiratory infections and potentially reduce the burden of seasonal illnesses.