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Long Does A Flu Shot Last

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Last Updated: 02 July 2021

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General | Latest Info

Give potential complications of the flu and that some people are at increased risk for them, you may wonder just how long flu shot lasts and if it will offer you the complete protection that you seek. The effects of vaccine generally only last through one flu season, which is about six months long. That's part of the reason you need one every year. Starting two weeks after you get the flu shot, you should be protected from certain Influenza viruses for the remainder of that Flu Season. Give delay, properly timing your flu shot is important.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

How Effective Are Flu Vaccines?

The flu vaccine is recommended for everyone aged 6 months and older. It's especially important for people who are at greater risk of having health problems from the flu to get vaccinate. They include: all kids 6 months through 4 years old, anyone 65 years and older, all women who are pregnant, trying to become pregnant, have recently given birth, or are breastfeeding during flu season, anyone whose immune system is weak from medicines or illnesses, people who live in long - term care facilities, such as nursing homes anyone with ongoing medical condition, such as asthma or Diabetes kids or teens who take aspirin regularly and are at risk for developing Reye syndrome if they get flu caregivers or household members of anyone in high - risk group native Americans and Alaska Natives kids under 9 years old need two doses of flu vaccine if they ve had fewer than two doses before July 2019. This includes kids who are getting flu vaccine for first time. Those under 9 who have received at least two doses of flu vaccine previously will only need one dose. Kids older than 9 only need one dose of vaccine. It can take up to 2 weeks for flu vaccine to become effective, so it's best to get vaccinated as soon as possible.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Are There Side Effects?

According to the CDC, mild side effects from flu shots include soreness, redness or swelling at the injection site, low - grade fever and aches. Only about 1 percent to 2 percent of people WHO get Flu shot will have fever as a side effect, Schaffner say. Rare but serious side effects can occur, including allergic reactions. Symptoms of serious side effects include difficulty breathing, swelling around eyes or lips, hives, racing heart, dizziness and high fever. If you experience serious side effects, you should seek medical care immediately, CDC say. For children, side effects from Flu nasal spray can include runny nose, wheezing, headache, vomiting, muscle aches and fever. For adults, side effects include runny nose, headache, sore throat and cough. These side effects last a short time compared to actual flu illness, CDC say.


Most common side effects

After your shot, you might have headaches or some achiness and pain in muscles throughout your body. This also usually happens on the first day and goes away within two days. Taking pain relievers can help ease your discomfort. It is controversial whether it is safe to take acetaminophen or ibuprofen to treat these vaccine side effects. Some research suggests that these medications might change or decrease how your body responds to vaccine. One study involving children found that taking acetaminophen or ibuprofen did reduce body response to the flu vaccine. Other research is mixed. It is still unclear whether these medications should be avoid.


Misconceptions about Flu Vaccines

Flu vaccines are not thought to make people more susceptible to other respiratory infections. 2012 study external icon that suggests that flu vaccination might make people more susceptible to other respiratory infections. After that study was publish, many experts looked into this issue further and conducted additional studies to see if findings could be replicate. No other studies have found this effect. It is not clear why this finding was detected in one study, but the majority of evidence suggests that this is not common or regular occurrence and that flu Vaccination do not, in fact, make people more susceptible to other respiratory infections. Maria Sundaram et al. Influenza Vaccination Is not associated With Detection of Noninfluenza Respiratory Viruses in Seasonal Studies of Influenza Vaccine Effectiveness external icon.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Continued

Vaccines work by spurring the immune system into action. In a sense, Vaccine teaches your body how to identify viruses and how to defend against them. Then, when you come into contact with an actual virus, your immune system quickly recognizes it and fights it off. So the effectiveness of a vaccine depends on how vigorously the immune system responds to it. If you have a weak immune system to begin with, vaccine may just not work as well. Many chronic illnesses can weaken the bodyas defenses. The CDC estimates that flu vaccines reduce the risk of hospitalization by 30% to 70% in people with chronic illnesses. While Flu Vaccine was once only available between October and the end of November, experts stress that you can now get it in December and January. Keep in mind that flu season often does n't peak until February or later. But the sooner you get it, better. Why? Simple: further you get into flu season, higher your risk of getting the flu. Herea something else to keep in mind: it can take two weeks for Flu Vaccine to take effect. So if you you exposed to flu within that two week period, you might still get sick. Once flu season is over, old vaccine is not as effective, so annual flu shots are needed for optimal protection. How Well Vaccine Is match With Dominant Flu Strains unlike other vaccines, Flu Vaccine is often updated each season to protect against what researchers believe will be Dominant Strains of Flu that year. Predictions are based on World - wide Monitoring of viruses. While predictions are generally accurate, they aren't foolproof. The effectiveness of flu vaccines in give year depends on their accuracy. Unfortunately, getting the flu vaccine does not guarantee that you will get the flu, but it is thought to provide at least partial immunity. If you catch the flu despite getting the vaccine, your symptoms may be milder. So, don't skip Vaccine - especially if you are at high risk for Flu complications. Even though Flu Vaccines may not work quite as well in young children, older adults, and ill, these very same people are most likely to have severe and even life - threatening complications from Flu. Itas crucial that they get vaccinate. While it may not be perfect, flu vaccine is the best defense we have. One more thing to keep in mind: Flu Vaccine does not protect against cold viruses. Some people believe that flu shots do work because they get sick despite being vaccinate. But in most of these cases, experts say, flu Vaccine does work - itas just that these people come down with unrelated cold virus.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Summary

Everyone 6 months of age and older should get Influenza Vaccine every season with rare exception. Cdcs Advisory Committee on Immunization Practices has made this recommendation since 2010 - 11 Influenza Season. Vaccination to prevent Flu is particularly important for people WHO are at High Risk of Developing serious Flu Complications See People at High Risk of Developing Flu - Related Complications for a full list of age and health factors that confer increased risk. More information is available at WHO Should Get vaccinate Against Influenza. Cdc recommends use of any licensed, age - appropriate Influenza Vaccine during the 2020 - 2021 Influenza Season, including inactivated Influenza Vaccine, recombinant Influenza Vaccine, or live attenuate Influenza Vaccine. No preference is expressed for any influenza vaccine over another. Both trivalent and Quadrivalent Influenza vaccines will be available. Trivalent Flu shot made using adjuvant, approved for people 65 years of age and older. Standard - Dose Quadrivalent Influenza shots that are manufactured using viruses grown in eggs. These include Afluria Quadrivalent, Fluarix Quadrivalent, FluLaval Quadrivalent, and Fluzone Quadrivalent. Different influenza shots are licensed for different age groups. Some are licenses for children as young as 6 months of age. Most Influenza shots are given in arm muscle with a needle. One Quadrivalent Influenza shot can be given either with a needle or with a jet injector. Quadrivalent cell - base Influenza shot containing virus grow in cell culture, which is licensed for people 4 years and older. This season, all four of vaccine viruses used in Flucelvax have been growing in cells, making the vaccine totally egg - free. Recombinant Quadrivalent Influenza shot, egg - free Vaccine, approved for people 18 years and older. Quadrivalent Flu shot using adjuvant, approved for people 65 years of age and older. Quadrivalent High - Dose Influenza Vaccine, license for people 65 years and older. There are many flu vaccine options to choose from, but the most important thing is for all people 6 months and older to get Flu Vaccine every year. If you have questions about which vaccine is best for you, talk to your doctor or other health care professional. More information on approved Flu vaccines for the 2020 - 2021 Flu Season, and age indications for each vaccine are available in CDCs Table: US Influenza Vaccine Products for 2020 - 2021 Season. You Should Get Flu Vaccine before Flu viruses begin spreading in your community, since it takes about two weeks after vaccination for antibodies to develop in the body and provide protection against Flu. Make plans to Get Vaccinated early in fall, before Flu Season begin. Cdc recommends that people get Flu Vaccine by the end of October. However, getting vaccinated early is likely to be associated with reduced protection against flu infection later in flu season, particularly among older adults. Vaccination should continue to be offered throughout the Flu Season, even into January or later. Children who need two doses of vaccine to be protected should start the vaccination process sooner, because two doses must be given at least four weeks apart.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Takeaway

Last year was a lousy year for flu Vaccine. Hospitalizations for flu hit a nine - year high, and Vaccine prevent flu in only 23% of all recipients, compared with 50% to 60% of recipients in prior years. Why does the flu vaccine work well in some winters and not others? Flu Vaccine primes the immune system to attack two proteins on the surface of the influenza virus, hemagglutinin and neuraminidase. Different flu strains have different combinations of these proteins. For example, strains targeted by recent flu vaccines are H3N2 and H1N1. Unfortunately, influenza virus is the microbiology answer to Miley Cyrus: it can change enough in just one year to become completely unrecognizable. H and N proteins are genetic chameleons that undergo constant transformation. This process is called antigenic drift, and it regularly flummoxes vaccine makers, public health experts, and your immune system. Hi Robert, Prevnar 13 and inactivated flu Vaccine were given at same time in one clinical study, and this seems to be safe and effective, although there is some mild increase in incidence of achiness and low - grade fever for few days in patients who receive both simultaneously. If you want to minimize your risk of Vaccination side effects, you could get a flu shot a week or two after Prevnar Vaccine. Best, John's contents displayed within this public group, such as text, graphics, and other material are intended for educational purposes only. Content is not intended to substitute for professional medical advice, diagnosis, or treatment. Always seek advice from your healthcare provider with any questions you may have regarding your medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read in public group. If you think you may have a medical emergency, call your healthcare provider or 911 immediately. Any mention of products or services does not mean guarantee, endorsement, or recommendation of products, services, or companies. Reliance on any information provided is solely at your own risk. Please discuss any options with your healthcare provider. Information you share, including that which might otherwise be protected health information, on this site is by design open to the public and is not a private, secure service. You should think carefully before disclosing any personal information in any public forum. What you have written may be see, disclosed to, or collected by third parties and may be used by others in ways we are unable to control or predict, including to contact you or otherwise be used for unauthorized or unlawful purposes. As with any public forum on any site, this information may also appear in third - party search engines like Google, MSN, Yahoo, etc. Your use of this site is governed by Harvard University and its affiliates ' Terms of Use located at www. Health. Harvard. Edu / privacy - policy and may be amended from time to time.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Sources

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

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