1, prevention of influenza A H1N1 normal people infected with influenza viruses (whether influenza A or B) 5-7 days after the body will rely on the body’s immune system to clear the virus, the production of protective antibodies, but the resulting antibody maintenance time is relatively short, generally not more than a week, the body will be infected with the same influenza virus, which is the reason why many people have repeated colds within a short period of time. The same reason, infected with influenza A (H1N1) virus its body produces immunity will not be retained for a long time, but through the vaccination of A (H1N1) vaccine to obtain antibodies can be kept in the body for as long as 1 year, which means that our bodies have resistance within a year, and to obtain such a long period of immunity, from the current technology, only through vaccination can be obtained! 2, reduce the outbreak of influenza A (H1N1) If vaccination A (H1N1) of the population to a certain percentage, the population to obtain immunity to influenza A (H1N1) is greatly increased, influenza A (H1N1) virus in these people can not reside and spread, the virus in the form and state of existence in nature will be reduced to a minimum, that is to say, the conditions of the outbreak of A (H1N1) does not exist. 3, to reduce the morbidity and mortality of the disease A H1N1 in history has caused a number of worldwide pandemic, resulting in a large number of deaths (about 30 million), in Western countries (especially Europe and the United States) caused a deep social and psychological shadow, talking about the “flu” phenomenon is a large number of people, is in a World War I and World War II caused by non-combat attrition of one of the main reasons, A H1N1 is different from the history of other influenza A, this year’s A H1N1 genes contain avian influenza, human influenza and swine flu gene fragments, that is, this virus is in people, poultry, pigs can exist, and pigs can exist in a variety of influenza viruses, so that these influenza viruses will recombine with each other and there is a possibility that new strains of influenza will emerge, causing new epidemics and deaths. If the overall immunity of the population is high, then the possibility of transmission from human to pig decreases, which also reduces the chance of virus recombination and mutation, directly reducing morbidity and mortality. 4, directly reduce the possibility of H5N1 and A H1N1 integration As is known, the new A H1N1 contains human, avian and swine influenza gene fragments, compared with the historical epidemic of H1N1 influenza increased swine gene fragments, the presence of H1 receptors in the human upper respiratory tract, but very few H5 receptors, which is easy to infect people with A H1N1 but not easy to infect avian H5N1, once A H1N1 and H5N1 these two viruses exist simultaneously in poultry or pigs, there are H5N1 virus has the ability to bind with the human upper respiratory tract receptors, or H1N1 pathogenicity is significantly enhanced, these are extremely detrimental to us humans, and to reduce this possibility, we must reduce the possibility of swine infected with avian influenza or poultry infected with swine flu, and infection between these individuals An important intermediate vector is our human, so if the population’s organism immunity is improved, the possibility of transmission as a vector is reduced to the greatest extent.