Shifting virus

In the world there are many laboratories are constantly replenished arsenal of vaccines and medicines. VirusInfluenza is among the most studied pathogens of infectious diseases. However, no year is complete without an epidemic of this infection, and once every few decades, as at present, the spread of flu is becoming a pandemic.

Virus Influenza is unique among infectious diseases because of its ability to rapidly and significantly change its structure. These changes affect the antigens — surface proteins that are recognized by the human immune system. Therefore, the immune system, drawn up after contact with another form of the

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