Flublok Quadrivalent 2021-2022 (injection)

Influenza virus ("the flu") is a contagious illness caused by a virus that can spread between people through the air or on surfaces. Symptoms of the flu include fever, chills, tiredness, body aches, sore throat, cough, vomiting, and diarrhea. The flu can also lead to sinus infections, ear infections, bronchitis, or serious issues like pneumonia.

Flublok Quadrivalent 2021-2022 is used in adults and children to help prevent infection caused by the influenza virus. This vaccine helps your body build immunity to the disease, but it will not treat an infection you may already have.

This medication guide is only for the injectable form of this vaccine.

Like any vaccine, Flublok Quadrivalent 2021-2022 may not protect every person from the disease.

Flublok Quadrivalent 2021-2022 will not make you sick with the flu virus.

Getting infected with the influenza virus may be more harmful to your health than getting this vaccine.

You may not be able to get this vaccine if you have ever had a severe allergic reaction to a flu vaccine or any of its ingredients.

Let your vaccination provider know if you are allergic to eggs. Some flu vaccines contain egg protein.

Tell your vaccination provider if you have:

• a fever;
• fainted after getting an injection;
• a weak immune system (either from a disease or from certain medications); or
• a history of Guillain-Barre syndrome (within 6 weeks after getting a flu vaccine).

Inform your vaccination provider if you are pregnant, plan to become pregnant, or are breastfeeding.

Get emergency medical help if you have signs of an allergic reaction: hives, difficulty breathing, swelling of your face, lips, tongue, or throat.

Some children aged 6 months to 4 years may have a higher risk of having a seizure caused by fever during the first day after vaccination. Tell your vaccination provider if your child has ever had a seizure. Call your doctor immediately if your child has a seizure.

Keep track of any side effects you experience. If you get this vaccine again in the future, you may need to inform the vaccination provider if the previous shot caused any side effects.

Flublok Quadrivalent 2021-2022 will not make you sick with the flu virus. You may experience flu-like symptoms at any point during flu season that could be caused by other strains of influenza virus.

Getting infected with the influenza virus may be more harmful to your health than receiving this vaccine. However, like any medicine, this vaccine can cause side effects, but the risk of serious side effects is very low.

Flublok Quadrivalent 2021-2022 may lead to serious side effects. Call your doctor immediately if you experience:

• a light-headed feeling, as if you might faint; or
• nervous system problems—numbness, pain, tingling, weakness, burning or prickly feeling, vision or hearing issues, trouble breathing.

Common side effects of Flublok Quadrivalent 2021-2022 may include:

• pain, redness, tenderness, swelling, bruising, itching, or a hard lump at the injection site;
• diarrhea, loss of appetite;
• muscle or joint pain;
• fever;
• headache, tiredness, general ill feeling; or
• fussiness, crying, or drowsiness in a child.

This is not a complete list of side effects, and others may occur. Call your doctor for medical advice about side effects. You can report vaccine side effects to the US Department of Health and Human Services at 1-800-822-7967.

Read all vaccine information sheets provided to you.

Follow your doctor's instructions or the schedule recommended by your local health department.

Your vaccination provider, pharmacist, or doctor can recommend the best Flublok Quadrivalent 2021-2022 for your age.

This vaccine is given as an injection (shot) into a muscle.

Children 6 months through 8 years of age may need 2 doses during the same flu season, given at least 4 weeks apart.

Since the Flublok Quadrivalent 2021-2022 is redeveloped each year for specific strains of influenza, you should receive a flu vaccine every year.

Make sure to get all recommended doses of this vaccine, or you may not be fully protected against disease.

An overdose of this vaccine is not likely to happen.

Follow the instructions from your vaccination provider regarding any limits on food, drinks, or activities.

Before getting this vaccine, inform your vaccination provider about all other vaccines you have received.

Other drugs may impact Flublok Quadrivalent 2021-2022, including prescription and over-the-counter medicines, vitamins, and herbal products. Inform your doctor about all other medicines you are using.