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Scientists developed a nasal spray that stops H5N1 bird flu in the nose and lungs, outperforming traditional shots in animal tests. The breakthrough could prevent future pandemics by blocking infection where it starts.
Scientists at Washington University have created a nose spray vaccine that completely protected mice and hamsters from bird flu infection, offering hope for preventing the next pandemic. The vaccine works better than traditional flu shots and stays effective even in people who've had previous flu vaccines.