'Nasal Spray' Vaccine Could Protect Against All Flu Strains

Nasal spray protects against pandemic flu strains.

A man receives an H1N1 flu vaccination during a clinic at the Bill Graham Civic Auditorium December 22, 2009 in San Francisco, California. (Justin Sullivan/Getty Images)

A man receives an H1N1 flu vaccination in 2009 during a clinic at the Bill Graham Civic Auditorium in San Francisco, California.

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"The hardest step towards broad scale implementation is going to be the cost of making the vector in the final product. It's going to have to become more affordable," Wilson says. "But if I thought we weren't close to doing that, I wouldn't have pursued this research. This is all about making an effective product."

 

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