Special Consideration Regarding Egg Allergy
People with egg allergies can receive any licensed, recommended age-appropriate influenza vaccine that is otherwise appropriate. People who have a history of severe egg allergy should be vaccinated in a medical setting, supervised by a health care provider who is able to recognize and manage severe allergic reactions. Two completely egg-free flu vaccine options are available: quadrivalent recombinant vaccine and quadrivalent cell-based vaccine.
How To Book Your Appointment
If you’re eligible for a free flu vaccine, you can book an appointment at your GP surgery or a pharmacy that offers it on the NHS.
You may also get an invitation to get the vaccine, but you do not have to wait for this before booking an appointment.
Everyone who is eligible for the free flu vaccine will be able to get it.
GP surgeries and pharmacies get the flu vaccine in batches. If you cannot get an appointment straight away, ask if you can book an appointment for when more vaccines are available.
If you have an appointment for a COVID-19 booster vaccine at a GP surgery or pharmacy, you may also be offered a flu vaccine at the same time.
Do not delay booking your flu vaccine appointment so that you can get both vaccines together. Only some people will be offered both vaccines at the same time.
Ii3 Vaccine Products Authorized For Use In Canada
This section describes the influenza vaccine products that are authorized for use in Canada for the 2020-2021 season. All influenza vaccines available in Canada have been authorized by Health Canada. However, not all products authorized for use are necessarily available in the marketplace. The vaccine manufacturers determine whether they will make any or all of their products available in a given market. Provincial and territorial health authorities then determine which of the products available for purchase will be used in their respective publicly funded influenza immunization programs and for which population groups.
The antigenic characteristics of circulating influenza virus strains provide the basis for selecting the strains included in each year’s vaccine. Vaccine selection by the WHO generally occurs more than 6 months prior to the start of the influenza season to allow time for the vaccine manufacturers to produce the required quantity of vaccine. All manufacturers that distribute influenza vaccine products in Canada confirm to Health Canada that the vaccines to be marketed in Canada for the upcoming influenza season contain the WHO’s recommended antigenic strains for the Northern Hemisphere. Vaccine producers may use antigenically equivalent strains because of their growth properties.
Standard-dose inactivated influenza vaccine
Both trivalent and quadrivalent products are authorized for use in Canada.
Adjuvanted inactivated influenza vaccine
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What Is In The Flu Shot
Every year, scientists around the world do their best to get one step ahead of the flu by developing that years iteration of the flu shot. As a reminder, vaccines work by giving your body a chance to fight off an altered version of a virus or bacteria, so that if and when it encounters the live virus in the wild, it already knows how to react, and you never get sick. But whats in a flu shot is a little more complicated.
The recipe starts with the four most common influenza strains from around the world, injected into fertilized chicken eggs or mammalian cells, deactivated so it doesnt give you the actual flu, mixed with a grab-bag of preservatives, antibiotics, and sugars. This combination is then formulated for a shot or spray to make it in time for the 2021 flu season. For those science-is-fucking-awesome types out there, this is indeed awesome.
Its also complex as hell something that keeps virologists on their toes every year. Influenza strains constantly mutate, but scientists get one shot at the annual vaccine, making their best guess some 30 weeks in advance to get the flu shot out to the public.
Can I Get The Flu Shot If I’m Pregnant

Yes, the CDC recommends receiving a flu shot during pregnancy. In fact, it is recommended that all women who are pregnant or may become pregnant during the flu season receive a flu shot during any trimester. A flu shot protects both the mother and the baby from getting the flu since the mother can pass some of the antibodies onto the baby. Any of the age-appropriate flu shots may be used. It is important that pregnant women only receive a flu shot the nasal spray flu vaccine is not recommended during pregnancy.
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What Are The Flu Vaccine Side Effects
Common flu shot reactions include redness, soreness, or swelling in the area where the shot was administered. The nasal spray could cause different side effects, such as runny nose, sore throat, or a cough. These side effects are usually mild and short-lived.
Some people may also develop a low-grade fever or body aches. Similar to the other side effects, these symptoms are usually mild and quickly go away on their own. While some of these side effects may feel flu-like, it’s important to remember that flu vaccines will not make you sick with the flu.
Allergic reactions to the flu shot are rare.
Where To Get The Flu Vaccine
You can have the NHS flu vaccine at:
- your GP surgery
- a pharmacy offering the service
- your midwifery service if you’re pregnant
- a hospital appointment
If you do not have your flu vaccine at your GP surgery, you do not have to tell the surgery. This will be done for you.
It’s important to go to your vaccination appointments unless you have symptoms of COVID-19.
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Antivirals: What To Do When You Already Have The Flu
When you come down with the flu, antiviral medicine can shorten its duration. The FDA has approved six influenza antiviral drugs in the U.S. But theyre all in somewhat short supply, so you might not be given them if youre not a child or elderly. This is why we get our flu shots, people!
The antiviral you probably already know goes by the brand name of Tamiflu, which you can get over the counter with relative ease even if youre not young or elderly. This drug, along with two others that work in the same manner , block an enzyme the virus needs to replicate. They can shave up to a day off your illness, but they need multiple doses to keep the drug working. Tamiflu, for instance, requires patients to take it twice a day for five days.
The newest antiviral, Baloxavir marboxil , is a single-dose antiviral drug approved in 2019 by the FDA. Baloxavir is for people with basic flu who are 12 years and older and have had symptoms for less than 48 hours. In a phase 2 trial published by The New England Journal of Medicine, it shaved off upwards of 28 hours of flu symptoms . This antiviral stands out in that its the only one that gets to the root of replication, messing with the virus RNA to stop it from reproducing. Also, its one of the only ones to come in a single dose, so you can pop it once and forget about it.
Ii7 Vaccine Safety And Adverse Events
Post-marketing surveillance of influenza vaccines in Canada has shown that seasonal influenza vaccines have a safe and stable profile. In addition to routine surveillance, every year during the seasonal influenza vaccination campaigns, PHAC and the Federal/Provincial/Territorial Vaccine Vigilance Working Group of the Canadian Immunization Committee conduct weekly expedited surveillance of AEFIs for current influenza vaccines in order to identify vaccine safety signals in a timely manner. Refer to the Canadian Adverse Events Following Immunization Surveillance System web page for more information on post-marketing surveillance and AEFIs in Canada.
All influenza vaccines currently authorized for use in Canada are considered safe for use in people with latex allergies. The multi-dose vial formulations of inactivated influenza vaccine that are authorized for use in Canada contain minute quantities of thimerosal, which is used as a preservativeFootnote 15,Footnote 16 to keep the product sterile. Large cohort studies of administrative health databases have found no association between childhood vaccination with thimerosal-containing vaccines and neurodevelopmental outcomes, including autistic-spectrum disordersFootnote 17. All single dose formulations of IIV and LAIV are thimerosal-free. Refer to Vaccine Safety in Part 2 of the CIG for additional information.
Common adverse events
Less common and serious or severe adverse events
Other reported adverse events and conditions
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The Australian Immunisation Register
The Australian Immunisation Register records vaccines given to all people in Australia.
Your immunisation provider is required to report all flu vaccinations to the Register. This includes some personal information such as your name, date of birth, contact details, and your Medicare card number. Find out how we manage this data in the Privacy Policy for the Australian Immunisation Register.
Find out more about influenza vaccination:
Iv1 Inactivated Influenza Vaccine
IIVs contain standardized amounts of the HA protein from representative seed strains of the two human influenza A subtypes and either one or both of the two influenza B lineages . IIVs currently authorized for use in Canada are a mix of split virus and subunit vaccines, both consisting of disrupted virus particles. Split virus vaccines contain whole inactivated viruses split with detergent, ether, or both, while subunit vaccines are made of purified HA and NA. The amount of NA in the vaccines is not standardized. HA-based serum antibody produced to one influenza A subtype is anticipated to provide little or no protection against strains belonging to the other subtype. The potential for trivalent vaccine to stimulate antibody protection across B lineages requires further evaluation and may be dependent upon factors such as age and prior antigenic experience with the two B lineagesFootnote 79,Footnote 80,Footnote 81,Footnote 82,Footnote 83,Footnote 84.
Because of potential changes in the circulating influenza virus from year to year and waning immunity in vaccine recipients, annual influenza vaccination is recommended. Although NACI is aware of some recent studies that suggest that vaccine induced protection may be greater in individuals who have no recent vaccine history, optimal protection against influenza, season after season, is best achieved through annual influenza vaccinationFootnote 85,Footnote 86. NACI will continue to monitor this issue.
Efficacy and effectiveness
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Influenza Vaccine Virus Strains
There are many different flu viruses, and they are constantly changing. The composition of US flu vaccines is reviewed annually and updated as needed to match circulating flu viruses. This season, all flu vaccines will be designed to protect against the four viruses that research indicates will be most common. Each year, the Food and Drug Administrations Vaccines and Related Biological Products Advisory Committee makes the recommendation for the flu vaccine composition for US flu vaccines.
For 2021-2022, recommendations were made for egg-based, cell-based, and recombinant flu vaccines as listed below:
Egg-based vaccine composition recommendations:
- an A/Victoria/2570/2019 pdm09-like virus
- an A/Cambodia/e0826360/2020 -like virus
- a B/Washington/02/2019- like virus
- a B/Phuket/3073/2013-like virus
Cell- or recombinant-based vaccine composition recommendations:
- an A/Wisconsin/588/2019 pdm09-like virus
- an A/Cambodia/e0826360/2020 -like virus
- a B/Washington/02/2019- like virus
- a B/Phuket/3073/2013-like virus .
These recommendations include two updates compared with 2020-2021 US flu vaccines. Both the influenza A and the influenza A vaccine virus components were updated. Compared with the Southern Hemisphere flu vaccine recommendation, this recommendation represents one update and that is to the influenza A component.
Influenza Vaccine Recommendations
The Best Flu Vaccine If You Have Egg Allergies

Many flu vaccines are made using chicken eggs called egg-based vaccines. While most people with egg allergies are still able to receive egg-based flu vaccines, there are rare instances where they can cause life-threatening allergic reactions. If this is the case for you or if youre concerned, Flucelvax Quadrivalent and Flublok Quadrivalent are two egg-free flu vaccine options.
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When Should I Get The Flu Shot
The flu season varies from year to year, but it has been known to start as early as October, peak in the winter months between December and February, and then may continue as late as May. The CDC recommends getting the flu vaccine early in the fall, before the flu season begins, ideally no later than the end of October. It takes about two weeks after vaccination for your body to build up the antibodies against the flu. It’s better late than never, though. Even if you don’t get the flu vaccine until January or later, you can still benefit from it.
It’s important to get the flu vaccine every year because both you and the flu virus change. The antibodies that you create to build immunity to the flu will decrease with time, so you need a new vaccine to renew your supply of antibodies. The flu viruses are also constantly changing, which is why there is a new formulation every year.
Where Can I Get A Flu Shot
There are more places than ever to get your flu vaccination. Doctorsâ offices, clinics, and health departments offer the flu shot but you may need to make an appointment in advance. Pharmacies have become an easy and convenient option to get your flu shot. At Walgreens, we offer flu shots whenever a pharmacist is on duty. Walk-ins are welcome, but if you’d prefer, you can make an appointment online. Find a location near you to ask about vaccine availability or schedule an appointment online.
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Flu Vaccination In 2021
Vaccination against influenza remains important this year. Flu is a highly contagious viral infection that can cause widespread illness and deaths every year. Vaccination is our best defence against flu viruses.
- Listen
Vaccination against influenza remains important this year. Flu is a highly contagious viral infection that can cause widespread illness and deaths every year. Vaccination is our best defence against flu viruses.
Behaviours such as increased hand washing and social distancing helped to stop the spread of flu viruses in the community last year. Relaxing social distancing restrictions this year may allow flu viruses to recirculate, even if they were hardly seen in 2020.
Delivery Of The Flu Shot In 2021
Not all flu shots are the same. Some arent even shots. Here are your 2021 flu vaccine options:
Nasal Spray: The nasal spray vaccine is the only kind to include a live attenuated influenza vaccine. Although it cant give you the flu, it does have a higher likelihood of inducing flu-like symptoms. This vaccine does not contain thimerosal or other preservatives. Its available only for patients aged 2 to 49.
For: People who cant stand the needle or jet spray or who want to avoid preservatives.
Inactivated shots are usually given with a needle, but Afluria Quadrivalent can be given to adults with a jet injector, which is basically a high-powered spray that penetrates the skin.
For: Needles can be used for everyone aged 6 months and older. The jet spray is approved for adults aged 18 to 64.
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The Flu Shot: What You Need To Know
Getting a flu shot each year is the best way to protect against the flu, and during COVID-19, a flu shot may be even more important.
Receiving a flu vaccine reduces the chance of flu-related doctor visits and hospitalizations, which can free up health care resources for others and protect vulnerable populations during the pandemic.
Who Should Get The Flu Vaccine
The Centers for Disease Control and Prevention recommends a flu vaccine for everyone 6 months of age and older.
But it’s especially important that those in higher-risk groups get vaccinated to avoid health problems from the flu. They include:
- all kids 6 months through 4 years old
- anyone 65 years and older
- all women who are pregnant, are trying to become pregnant, have recently given birth, or are breastfeeding during flu season
- anyone whose immune system is weakened from medications or illnesses
- people who live in long-term care facilities, such as nursing homes
- any adult or child with chronic medical conditions, such as asthma or diabetes
- kids or teens who take aspirin regularly and are at risk for developing Reye syndrome if they get the flu
- caregivers or household members of anyone in a high-risk group
- Native Americans and Alaska Natives
Babies younger than 6 months can’t get the vaccine. But if their parents, other caregivers, and older kids in the household get it, that will help protect the baby. This is important because infants are more at risk for serious problems from the flu.
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How Is This Vaccine Given
Some brands of this vaccine are made for use in adults and not in children. Your child’s vaccination provider can recommend the best Flublok Quadrivalent 2021-2022 for your child.
This vaccine is given as an injection into a muscle.
Children 6 months to 8 years old may need a second flu shot 4 weeks after receiving the first vaccine.
The Flublok Quadrivalent 2021-2022 is usually given in October or November. Follow your doctor’s instructions or the schedule recommended by your local health department.
Since the Flublok Quadrivalent 2021-2022 is redeveloped each year for specific strains of influenza, you should receive a flu vaccine every year.
Audenz: Protection For A Future Bird Flu Pandemic

In February 2020, the FDA approved Audenz monovalent vaccine, adjuvanted) from Seqirus. Audenz is an inactivated, cell-based influenza vaccine designed to protect against influenza A in the event of a H5N1 flu) global pandemic. It is not currently found in other U.S. flu vaccine products. The U.S. government will stockpile this vaccine and distribute it in the event of an outbreak. Outbreaks of bird flu have occurred in Asia, Africa, North America and parts of Europe.
- Audenz is approved in people 6 months of age and older at increased risk of exposure to the influenza A virus H5N1 subtype contained in the vaccine.
- Audenz is given as 2 different shots. The two doses are given as an intramuscular injection 21 days apart. It is important you complete the two-dose immunization series if you need the vaccine.
- Audenz contains an adjuvant that increases the effectiveness of the vaccine and is developed using cell-based technology.
Common side effects with Audenz in adults may include injection site pain, fatigue , headache, generally feeling unwell , joint and muscle pain, and nausea . Allergic reactions can occur and appropriate medical treatment must be available to manage possible anaphylactic reactions following administration of the vaccine.
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