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Flu Vaccines: Everything You Need to Know

Flu season is almost here and let’s face it — no one has time for sniffles and coughs. Save yourself the time and suffering. You have the power to protect yourself and the ones you love from influenza and as your trusted health resource, we are here to help you do just that.


Here is everything you need to know about getting vaccinated against the flu!




How do flu vaccines work?

Vaccines train our immune systems to create proteins called antibodies, which are responsible for fighting diseases in our bodies.¹ When we get the flu vaccine, our bodies are exposed to a version of the flu that has been already killed or weakened. This helps our immune system create antibodies to fight the flu without getting sick.


Once the body processes the vaccine and produces antibodies, it also creates antibody-producing memory cells, which remain alive even after the flu is defeated. If the body is exposed again, the antibody response is faster and more effective than the first time around because the memory cells are ready to pump out antibodies in defense.¹


Getting vaccinated for the flu goes far beyond just protecting yourself. Vaccinations work at their best when we develop herd immunity. This is when many people within a community are vaccinated, lessening the flu’s spread and preventing people that are unable to vaccinate from getting sick.¹ The more people get vaccinated, the more we can keep our communities healthy.


How effective are flu vaccines?

Flu vaccination effectiveness can vary depending on the health and age of the person getting the flu shot and how well the vaccine matches with circulating flu strains that season.² Flu viruses change quickly, meaning the vaccine created for last year’s virus may not protect you from the flu viruses this year. The more the flu vaccine matches circulating flu viruses, the better protection we have against getting the flu. If you still get sick even if you received a flu vaccine, flu vaccination reduces the severity of the sickness.³


Who should get the flu vaccine?

Annual flu vaccinations are recommended for everyone 6 months or older, but vaccinations are especially important for those at high risk for flu-related complications:³

  • Children ages 6 months – 5 years of age

  • Adults older than age 65

  • Indigenous Peoples

  • Residents of nursing homes and other long-term care facilities

  • People who are pregnant or plan to be pregnant

  • People with weakened immune systems

  • People who have chronic health conditions, such as asthma, heart disease, kidney disease, anemia, and diabetes

  • Regular childcare providers to children less than 5 years of age

  • Health care and other care providers working in facilities and community settings

While everyone 6 months and older should get a flu vaccine, there are some rare exceptions:⁴

  • Children younger than 6 months of age are too young to get a flu shot.

  • People with severe, life-threatening allergies to any ingredient in a flu vaccine (other than egg proteins) should not get the vaccine. This might include gelatin, antibiotics, or other ingredients.

  • People who have had a severe allergic reaction to a dose of influenza vaccine should not get that flu vaccine again and might not be able to receive other influenza vaccines. If you have had a severe allergic reaction to an influenza vaccine in the past, it is important to talk with your healthcare provider to help determine whether vaccination is appropriate for you.


When should you get your flu shot?

In Canada, flu season is in the fall and winter. However, influenza viruses are still present and circulating year-round. Flu cases generally peak between December and February and sometimes last until early spring.


Don’t wait too long to get your flu shot either as it takes about two weeks after vaccination for antibodies to develop in the body to fully protect against the flu.⁵


We highly encourage you to talk with our team or your healthcare provider about any additional questions or concerns you may have about flu vaccines. You have the power to protect yourself and the ones you love from influenza by getting your annual flu shot!


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