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Why doesn't the flu vaccine work all the time? (group 1) Aleesha ,…
Why doesn't the flu vaccine work all the time? (group 1) Aleesha , Alisha Fatima , Adina, Areesha
Flu vaccinations are needed each year to ensure you have continuous protection. Though you may have received a flu vaccine last year, your body's immune system from previous vaccinations gradually decreases over time. By the time flu season comes around, your body's immunity to it is virtuality non-existent
Recent studies show flu vaccine can reduce the risk of flu illness by between 40% and 60% among the overall population during seasons when most circulating flu viruses are well matched to the flu vaccine viruses.
Most flu vaccines consist of inactivated flu viruses. These viruses are coated with a protein called hemagglutinin (HA), [which helps them bind to host cells.
The children's flu vaccine is safe and effective. It's offered every year as a nasal spray to children to help protect them against flu.Flu is caused by a virus. It can be a very unpleasant illness for children. It can also lead to serious problems, such as bronchitis and pneumonia.Children spread flu easily. Vaccinating them also protects others : who are vulnerable to flu, such as babies and older people.
both vaccinated and unvaccinated people were infected with similar flu viruses and that the vaccine didn’t elicit a strong immune
(adinawaqas)
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There are different types of flu viruses, including influenza A and influenza B, and each has subtypes. Aside from this, influenza viruses mutate constantly, which is one reason that a singular flu shot for ongoing protection is challenging.
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Why should i get vaccinated?
Without vaccines, we are at risk of serious illness and disability from diseases like measles, meningitis, pneumonia, tetanus and polio. Many of these diseases can be life-threatening. WHO estimates that vaccines save between 2 and 3 million lives every year. :
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Flu vaccines help protect against the main types of flu viruses, although there's still a chance you might get flu.
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Flu vaccines are designed to get the immune system to produce antibodies that recognize the specific strains of the virus someone may encounter in a given year
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Flu vaccines help protect against the main types of flu viruses, although there's still a chance you might get flu.
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If you do get flu after vaccination, it's likely to be milder and not last as long.
How well the flu vaccine works (or its ability to prevent flu illness) can vary from season to season. The vaccine’s effectiveness also can vary depending on who is being vaccinated. At least two factors play an important role in determining the likelihood that flu vaccine will protect a person from flu illness: 1) characteristics of the person being vaccinated (such as their age and health), and 2) the similarity or “match” between the flu viruses the flu vaccine is designed to protect against and the flu viruses spreading in the community.
