Respiratory syncytial virus (RSV) is a common cause of respiratory disease. The virus is highly contagious and usually affects the lungs and airways. For most people, infections can feel like a common cold, but for some, the virus is potentially life-threatening.

Respiratory syncytial virus mRNA vaccine is used to prevent lung disease caused by respiratory syncytial virus in adults at least 60 years old.

Respiratory syncytial virus mRNA vaccine does not contain RSV and cannot give you lung disease.

Like any vaccine, the respiratory syncytial virus mRNA vaccine may not provide protection from disease in every person.

You should not receive this vaccine if you ever had a life-threatening allergic reaction to any component of this vaccine.

Tell your doctor or vaccination provider if you have or have ever had:

• a weak immune system (caused by disease or by using certain medicine);
• a bleeding disorder or you are taking a blood thinner (warfarin, Coumadin, Jantoven);
• fainting after receiving an injection;
• a severe allergic reaction to any other vaccine;
• if you received any other RSV vaccine in the past;
• fever; or
• any other allergy.

This vaccine is not approved for use by anyone younger than 60 years old. Tell your doctor or vaccination provider if you are pregnant, plan to become pregnant, or are breastfeeding.

Use Mresvia Prefilled Syringe (Cvx 326) (Intramuscular) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

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

The vaccination provider may want to watch you for a short time after the injection to make sure you do not have an allergic reaction or faint. You will be treated quickly if there is a reaction right after receiving the vaccine.

Becoming infected with RSV is much more dangerous to your health than receiving this vaccine.

Call your doctor at once if you have:

• fast heartbeats;
• nausea, vomiting, dizziness, weakness;
• fever; or
• loss of movement in your face.

Common side effects may include:

• pain, bruising, swelling, irritation, or tenderness in the armpit of the arm where the vaccine was injected;
• headache;
• joint or muscle pain;
• feeling very weak or tired; or
• chills.

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

Follow your vaccination provider's instructions about any restrictions on food, beverages, or activity.