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Scientists developed a nasal spray vaccine that protected mice from COVID, flu, bacteria, and even allergens for months. Unlike typical vaccines, it activates the body's first-line defense system to fight multiple threats at once.
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.