As bird flu continues to circulate in animals and spill over into humans, researchers are racing to stop it before it adapts to spread widely between people. A new nasal spray vaccine showed strong protection against H5N1 in animal tests, outperforming traditional flu shots. Because it targets the nose and lungs, it may prevent infection at the earliest stage.
Source: https://www.sciencedaily.com/releases/2 ... 114343.htm
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