Influenza is highly infectious disease and the influenza viruses are a
considerable threat to human health all around the world. The
prevention and treatment of the disease can be done by vaccines and
antiviral substances, but only with certain limitations. The virus is a
highly notorious one, and rapidly mutates via genetic drift (characterized by point mutations in antigenically important positions caused by selective pressure from host immune response) and genetic
shift (characterized by a substitution of a whole gene from one subtype
to another), re-surfacing as an uncontrolled pathogen for massive destruction
Last date updated on October, 2014