New nanoparticle vaccine could help protect against flu and other viruses - Indiatalkies.com

Washington, Oct : MIT engineers have developed a new type of nanoparticle that protects the vaccine long enough to generate a strong immune response - not only in the lungs, but also in mucosal surfaces far from the vaccination site, such as the gastrointestinal and reproductive tracts.

http://www.indiatalkies.com/2013/10/nanoparticle-vaccine-protect-flu-viruses.html