Novel intranasal vaccine technology shows promise for broad protection against respiratory viruses

Vaccines save millions of lives every year, but there is still an urgent need for more efficient vaccines. Strategies to combat serious outbreaks of viral infections are particularly important. Such infections are initiated at mucosal surfaces, where there is a close association between polarized epithelial cells and immune effector cells. However, vaccines are usually given intramuscularly or subcutaneously, and often do not provide sufficient protection at the actual site of infection.

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