When Should I Get Vaccinated
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You should get a 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 the fall, before flu season begins. CDC recommends that people get a flu vaccine by the end of October. However, getting vaccinated early is likely to be associated with reduced protection against flu infection later in the 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 of vaccine to be protected should start the vaccination process sooner because the two doses must be given at least four weeks apart.
Dispelling Misinformation About The Flu Vaccine Sickness Treatment And Recovery
If you’ve ever had the flu, you know how sick you can be. Chances are good that some of the advice friends and family gave you about avoiding or dealing with the flu was wrong. There seems to be no shortage of misinformation and bad advice when it comes to dealing with the flu and the flu shot.
Here are 10 common myths about the flu.
Why Do You Get A Fever After The Flu Shot
It’s really important to note that a post-shot fever doesnt mean youve actually gotten the flu, or that the shot is unsafe. The flu vaccine can decrease your likelihood of contracting the flu by 40 to 60 percent, per the Centers for Disease Control and Prevention. And even if you do get the flu, the vaccine can reduce the severity and long-term health risks of your illness, reports the CDC.
A fever is actually a sign that your immune system has kicked in, Dr. Whyte says. The vaccine introduces pieces of the virus into your body, and then your cells go to the site where the vaccine was given, causing an immune response, Dr. Whyte explains. All of this leads to inflammation in the body, which may manifest as a fever.
Many experts believe one of the reasons why you might get a fever is because viruses don’t like high temperatures, so raising your temperature is a way to fight the infection, he adds. It’s one of the body’s defenses.
And dont worry, just because you dont develop a strong bodily reaction from your shot doesnt mean that youre any less protected. TBH, its usually more common for kids to have fevers than adults, Dr. Whyte says.
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People At High Risk Of Complications From The Flu
- people with health conditions, such as:
- cancer and other immune compromising conditions
- diabetes
- kidney disease
- neurological or neurodevelopmental conditions
- children up to 18 years of age undergoing treatment for long periods with acetylsalicylic acid
What Other Side Effects Can You Get From The Flu Shot

Other side effects of the flu shot include:
- Headache
- Redness at the injection site
- Fatigue
- Nausea
- Muscle aches
You may think these sound like the symptoms of the flubut again, theyre not. These are all symptoms of receiving the vaccine, per the CDC.
Both inactivated and attenuated shots cause the same set of side effects year after year, Dr. Whyte says. Symptoms will generally occur within a few hours after your vaccination, and at the very latest one to two days post-vaccine, Dr. Whyte explains.
It would be very unusual to have symptoms after one to two days, but there are some instances where reactions could occur two weeks later, Dr. Whyte says. If you have any of these symptoms multiple weeks after getting jabbed, you may want to consult your doctor.
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What Is The Cell
The production of influenza vaccines traditionally involves hens eggs. However, there is a different method for cell-based influenza vaccines such as Flucelvax Quad, the only cell-based flu vaccine approved for use in Australia. Its approved for use in people aged 9 years and older but has not been added to the National Immunisation Program schedule.
Studies show that cell-based vaccines have a similar efficacy and safety profile to standard flu vaccines. Normally, neither type is recommended over the other.
However, standard flu vaccines are preferred for use in pregnancy because a large body of evidence supports their safety for pregnant women. The safety of cell-based flu vaccines during pregnancy hasnt been assessed.
/8why Should You Get Your Flu Shot Now
With the onset of COVID-19, there was a major drop in the number of flu cases in India and abroad as compared to the pre-COVID era.
According to data, in 2020, the total number of flu cases was 2,752 with 44 deaths as opposed to 28,798 cases and 1,218 deaths in 2019. Besides the decrease in the number of testing, along with the similarities in the symptoms of COVID and flu, doctors believe that masking and social distancing is what curbed the spread of the viruses.
However, the recent state of affairs only suggest that people are more relaxed and less concerned about safety measures, which automatically can lead to a rise in the number of flu cases.
This is why, medical professionals continue to urge people to receive their flu vaccines on time so as to help lessen the burden of the healthcare system and also to reduce any serious complications.
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Who Should Not Have The Flu Vaccine
Most adults can have the flu vaccine, but you should avoid it if you have had a serious allergic reaction to a flu vaccine in the past.
You may be at risk of an allergic reaction to the flu vaccine injection if you have an egg allergy. This is because some flu vaccines are made using eggs.
Ask a GP or pharmacist for a low-egg or egg-free vaccine.
If you’re ill with a high temperature, it’s best to wait until you’re better before having the flu vaccine.
The Flu Shot Is Effective
The effectiveness of the vaccine varies from season to season. It depends on:
- how well the vaccine matches with the circulating flu viruses
- the health and age of the person getting the flu shot
The viruses circulating in the population can sometimes change during the time it takes to produce a vaccine. When this happens during the flu season, the flu shot may not work as well as expected.
It’s also important to remember that the flu shot protects against several different flu viruses each season. The seasonal flu shot can still provide protection against the remaining 2 or 3 viruses, even when theres:
- a less-than-ideal match
- lower effectiveness against one virus
If you do get the flu, the flu shot may reduce the severity of flu-related complications.
Getting your flu shot is still the most effective way to protect yourself against the flu and flu-related complications.
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How Effective Is The Flu Vaccine
The flu vaccine gives the best protection against flu.
Flu vaccines help protect against the main types of flu viruses, although there’s still a chance you might get flu.
If you do get flu after vaccination, it’s likely to be milder and not last as long.
Having the flu vaccine will also reduce the chance of you spreading flu to other people who may be more at risk of serious problems from flu.
It can take 10 to 14 days for the flu vaccine to work.
What Are The Possible Side Effects
Most people have no problems from the vaccine.
If you get the flu shot, you might have a mild fever and feel tired or achy afterward. Some people also have soreness, redness, or swelling where they got their shot. These problems arenât serious and donât last long.
Serious side effects are rare. If they do happen, it’s within a few minutes to a few hours after you get the shot. Call your doctor right away if you have trouble breathing, hives, feel weak or dizzy, or have a fast heartbeat afterward.
If you get the nasal spray, you might have side effects like a runny nose, headache, cough, and sore throat. These are milder and shorter than the flu.
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Myth #: You Can Get The Flu From The Flu Shot
Fact: The flu shot does not contain an active virus. So, the answer to questions like Can you get the flu from the flu shot? Can the flu shot make you sick? or Is the flu vaccine a live virus? is a definite no.
But for some, the flu shot does come with mild side effects that can easily be mistaken for early flu-like symptoms. The most common flu shot side effects include mild soreness, tenderness or a bit of swelling at the injection site. You may also run a small fever, or experience slight headaches or muscle aches.
On the other hand, many experience no flu shot reactions at all! Plus, a day or two of mild discomfort simply doesnt compare to what you can experience with a full bout of the flu. Flu symptom onset is fast and often involves fever, chills, extreme fatigue, muscle aches and more for several days.
Pregnancy And Influenza Immunisation

Pregnant women are at increased risk of complications from the flu. The flu vaccine is strongly recommended and safe for pregnant women at any time during pregnancy. It can also be safely given while breastfeeding.
Flu vaccination of pregnant women also protects infants against the flu for the first 6 months after birth due to transplacental transfer of antibodies from the vaccinated woman to the unborn baby.
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Treatment For The Flu
When considering treatment for the flu, itâs helpful to keep these considerations in mind:
- Treating the flu should begin as soon as possible because antiviral drugs work best when started early or within 48 hours after symptoms start.
- For you to get an antiviral drug, a health care provider needs to write a prescription. These medicines fight against flu by keeping flu viruses from creating more viruses in your body.
- Antiviral drugs can make your flu milder and help make you feel better faster. They may also prevent severe health problems that can result from having the flu.
Why You May Still Get Sick After A Flu Shot
Michael Menna, DO, is board-certified in emergency medicine. He is an attending emergency medicine physician at White Plains Hospital in White Plains, New York and also works at an urgent care center and a telemedicine company that provides care to patients across the country.
An annual flu shot offers you the best protection against the influenza virus and is recommended for most individuals 6 months and older. It is still possible for you to get sick after a flu shot, but this isn’t because of what’s in the shot. The flu vaccine is made from killed, or inactivated, viruses that can’t give you the flu.
This article explores the reasons why you may get sick after the flu shot. It will also explain how the vaccine may help reduce symptoms and complications if you do end up getting the flu.
Verywell / Joshua Seong
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How Long Does The Flu Shot Protect You From The Flu
A flu shot should help to protect you for the duration of the current flu season. However, youll need to get another flu shot next fall.
You may be wondering why you need to get a flu shot every year. There are a couple of reasons for this. One is related to the virus itself while another has to do with your level of immunity.
Influenza viruses are continually evolving throughout the year. Because of this, last years vaccine may not be a good match for the viruses that are prevalent this flu season.
The flu vaccine protects against the strains of influenza that research predicts will be the most prevalent in the upcoming flu season.
Your vaccine will typically include four strains , but may sometimes include three .
Additionally, a 2019 research review showed that the immunity provided by the flu shot decreases quickly over time.
This is why you likely wont have enough immunity from this years shot to protect you into the next flu season.
While You Cannot Contract The Flu From The Flu Shot Vaccines Like Any Medication Come With The Risk Of Side Effects
Common side effects include: Soreness, redness, or swelling where the shot was given low grade fever muscle aches or toughness/itching at the injection site. These reactions typically present soon after the flu shot and last one to two days.
If you experience a life-threatening allergic reaction, such as breathing problems hoarseness or wheezing hives paleness weakness increased heart rate or dizziness, seek medical attention immediately.
In some cases, symptoms of reaction persist and can develop into long-term illnesses.
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What Arm Should I Get My Flu Shot In
Dr. Mora recommends getting the flu shot in the arm you use the least. “That way if you are writing or doing day-to-day activities, you’re not aggravating the muscle even more,” she says.Some other ways to reduce pain include trying not to tense your arm while you’re being vaccinated and moving your arm after vaccination to increase blood flow and help disperse the vaccine throughout the area.
Who Should Have The Nasal Spray Flu Vaccine
The nasal spray flu vaccine is free on the NHS for:
- children aged 2 or 3 years on 31 August 2021 born between 1 September 2017 and 31 August 2019
- all primary school children
- all year 7 to year 11 children in secondary school
- children aged 2 to 17 years with long-term health conditions
If your child is aged between 6 months and 2 years and has a long-term health condition that makes them at higher risk from flu, theyll be offered a flu vaccine injection instead of the nasal spray.
This is because the nasal spray is not licensed for children under 2 years.
The nasal spray vaccine offers the best protection for children aged 2 to 17 years. They will be offered the flu vaccine injection if the nasal spray vaccine is not suitable for them.
Some children will be offered the injected flu vaccine if they have:
- a severely weakened immune system
- asthma thats being treated with steroid tablets or that has needed intensive care in hospital
- a flare-up of asthma symptoms and need to use a reliever inhaler more than usual
- had an allergic reaction to a flu vaccine in the past
- a condition that needs salicylate treatment
If youre not sure, check with the school immunisation team, the nurse or GP at your surgery, or a hospital specialist.
The injected flu vaccine is given as a single injection into the muscle of the upper arm, or the thigh for children under 1 year.
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Is The Nasal Spray As Effective As The Flu Shot
In the past, the Centers for Disease Control and Prevention recommended against getting the nasal spray vaccine.
The reason for this was because studies in children found that it was less effective than the flu shot for protecting against the 2009 H1N1 pandemic influenza strains.
However, there have been recent advances in the production of the nasal spray vaccine.
Since the 2018 to 2019 flu season, the
- people with underlying health conditions, such as asthma, diabetes, or cancer
- those with weakened immune systems
- individuals living in a nursing home or long-term care facility
Getting your flu shot is also particularly important in light of COVID-19. Both the flu and COVID-19 have similar symptoms and will circulate within communities this winter.
While the flu vaccine wont protect you from COVID-19, it can help prevent you from getting the flu.
In addition to keeping you out of the doctors office, this can also conserve medical resources for those that have COVID-19 or other health conditions.