In fact, it is well-known that the flu virus has a huge number of subtypes. And it continues mutating all the time. A vaccine efficient against one subtype today can become absolutely useless against another flu type tomorrow.

An efficiency fight agains influenza is annually denied, however, due to some optimistic anti-flu ads there’s always somebody who is ready to be a guinea pig in new experiments and investigations. Some peopel relly want to test on themselves injections which make them go off the rails for a week and which have no real guarantees of safety and efficiency. It’s a pathetic attempt and a doublful experiment.

But there is a set of ways of nonspecific preventive measures that have proved to be quite effective against flu. The most simple of them is a wearing gauze bandage during the flashes of infection. Besides, you can try tempering, taking vitamins, micro- and macrocells, natural and synthetic immunomudulators, interferons, etc.