H1N1 influenza ("H1N1 influenza") is an epidemic prevalent recently in the world. Swine influenza began to spread in Mexico in April 2009, and by June, the World Health Organization raised the alert level to the global epidemic. The virus spreads rapidly all over the world. Fortunately, governments around the world provide immunization vaccines against epidemics. In Lawrence Gostin's "Swine Flu Vaccine: Fairness" (2009), he explained his question about swine influenza vaccination and a wealthier country has greater advantages over poor countries in receiving immunization I emphasized.
2009 H1N1 Influenza Pandemic (New Influenza A H1N1 strain), highly pathogenic avian influenza strains (A / H 5N1 and A / H 7N9) and past unpredictability of seasonal influenza vaccine mismatch virus and global response to emerging strains Currently, influenza A (H1N1) and H3 subtypes are prevalent. Direct transmission of highly pathogenic avian influenza virus to humans (such as influenza A / H 5 N 1 influenza, and more recently influenza A / H 7 N 9) poses additional threats, but this strain does not yet demonstrate the ability to spread effectively Hmm. Vaccination is still the preferred way to control influenza; however, the annual large-scale vaccination challenge now requires special attention to the child, the need to improve vaccination for all ages It is beyond the capacity of a country with limited resources.
Seasonal influenza vaccine prevents influenza virus, and research showed that virus is the most common in next season. Trivalent vaccines are used to prevent three influenza viruses, influenza A (H1N1) virus, influenza A (H3N2) virus, and influenza B virus. The tetravalent vaccine can prevent four viruses, the same virus as trivalent vaccine and another B virus. The influenza vaccine is safe. Serious problems concerning influenza vaccine are very rare. The most common side effect that a person may experience is the pain given by injection. This is usually mild and usually disappears in 1 or 2 days. For more information, please see the safety of influenza vaccine.