The flu vaccine is a critical tool in the fight against influenza, a highly contagious respiratory illness caused by influenza viruses. Vaccination is the most effective way to prevent the flu and its potential complications, which can range from mild symptoms to severe illnesses requiring hospitalization. Each year, the flu vaccine is updated to protect against the most common strains of the virus expected during the upcoming flu season. By receiving the flu vaccine, individuals not only protect themselves but also help reduce the spread of the virus within the community, contributing to herd immunity. The flu vaccine works by stimulating the immune system to produce antibodies that protect against the influenza virus. When vaccinated, the body is exposed to inactivated or weakened viruses, or in some cases, a recombinant form of the virus. This exposure does not cause the flu but instead triggers an immune response. If the vaccinated person later comes into contact with the actual virus, their immune system can recognize and fight it off more effectively, reducing the likelihood of infection or mitigating the severity of the illness.
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