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 ...

The symptoms, such as drinking plenty of fluids, taking over-the-counter pain relievers and using a saline nasal rinse or ...

The trial will evaluate the safety and effectiveness of a next-generation vaccine administered through a nasal spray or ...