The mankind are in the process of evolve in acquire because of infection disease of the natural immunity dint be matchless and strong, is a kind of special and precious wealth that the great universe gives mankind and this be also a kind of widespread phenomenon.The typical model example of nature immunity come from flu.
The as early as last century is 67 and people's immunity in resisting flu method once carried on an issue.Someone thinks to the person, particularly to the child is the method prevention which uses artificial immunity(have a flu vaccine)'s effect of flu not so good, would rather make them on the sick list to acquire natural immunity dint behind than let the child have a flu vaccine.
In January, 1969, a specific name is flu of flu virus in Hong Kong to abrupt in the United States for the first time and seized not a few people's life.Flu spreads to Europe and Australia later on, but the sufferer down sharply and this kind of causes a biggest pay attention to of the professional personnel as a result.They discover while check medical science cultural heritage and was infected by the virus of Asian flu in 1968 of person at 1969 have never been subjected to flu virus in Hong Kong with 1970 it harm, because of Asian flu of virus is likeness to flu virus in Hong Kong.Be also say that falling ill before acquired after ising natural of particularity immunity dint, had an important function towards afterwards prevent
