1) The flu vaccine is recommended every year because the influenza virus undergoes regular changes or mutations. These changes result in the emergence of new strains of the virus each year. To provide protection against these new strains, a new flu vaccine formulation must be developed and distributed annually.
2) The flu vaccine works by stimulating the immune system to produce an immune response against the specific strains of the influenza virus included in the vaccine. Once vaccinated, the immune system recognizes and attacks the virus if it enters the body, preventing or reducing the severity of the infection.
3) The best time to get a flu vaccine is in the early fall, before the flu season begins. This is recommended because it takes about two weeks after vaccination for the body to develop immunity against the flu virus. By getting vaccinated early, individuals can ensure that they are protected before coming into contact with the virus.
4) The effectiveness of the flu vaccine varies each year depending on how well the vaccine matches the circulating strains of the virus. The vaccine's effectiveness can range from 40% to 60% on average. Even when the vaccine may not be a perfect match, it can still reduce the severity of the illness and prevent complications.
5) The flu vaccine is recommended for almost everyone aged 6 months and older, with few exceptions. Some individuals, such as those with severe allergic reactions to previous flu vaccinations, are not advised to receive the vaccine. Additionally, infants younger than 6 months cannot be vaccinated, so it is essential that the people around these infants are immunized to provide indirect protection.
6) The CDC updates its flu vaccination recommendations each year to account for the changing nature of the influenza virus and to ensure that the vaccine is effective against the strains likely to circulate that year. This allows the CDC to provide the most up-to-date guidance to healthcare providers and the public regarding flu prevention strategies, thus maximizing the effectiveness of the vaccine and minimizing the impact of the flu on public health.
Why do you think the flu vaccine is recommended every year?
How does the vaccine affect the immune system?
When is the best time to get a flu vaccine? Why?
Is the vaccine effective?
Who is and who is not recommended to receive a flu vaccine? Why do these recommendations exist?
Why is it important for the CDC to update its flu vaccination recommendations each year?
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