The World Health Organization (WHO) recommends completely change the composition of the influenza vaccine for the northern hemisphere, including Russia. This decision is due to mismatch of the antigenic composition of vaccines and viruses that cause epidemics, AMI-TASS reported. In the analysis of the epidemiological importance of different types of influenza virus in 2007-2008, it became clear that existing vaccines partially with the antigenic properties of the type A influenza virus, and completely agree - the virus type B. This means that the body immune response to the vaccine does not always help prevent the disease. A/Brisben/N1N1 / A/Brisben/N3N2 / and V/Florida/4/2006: be significant following subtypes according to forecasts by the WHO in the future epidemic season. Therefore, the vaccine antigen.
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