Nasal vaccine devices have the potential to offer more convenient and more effective protection against a variety of viruses.

Just a few puffs into each nostril, and you're protected against infection from nasty cold viruses - that is, according to claims made for many nasal sprays. Can they really do this?Well, not directly ...

Viruses and germs lurk everywhere: on surfaces that we touch and in the air. People catch most of them by breathing them in. ...