Nasal Spray Can Fight Off Flu in 2 Hours, San Diego State University Study

Published: Jul 09, 2012

A NEW spray that helps boost the immune system can fight off flu in just two hours - even before symptoms have developed, according to scientists. The drug, delivered by a nasal spray, contains a synthetic protein that triggers the immune system to fight the flu before the body normally would. Once a person is exposed to the flu, current treatments are designed to target the current circulating strain exactly, but the virus can sometimes develop a resistance against them.

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