MMR and varicella vaccine together: what to know

MMR protects against measles, mumps, and rubella. Varicella vaccination protects against chickenpox, an infection caused by the varicella-zoster virus. These are separate vaccines, even when administered on the same day. Both are live attenuated vaccines, so the clinician needs to consider pregnancy, immune function, medicines, previous doses, and any history of the illnesses. Information about [Chickenpox](/conditions/chickenpox/) can help explain the infection being prevented.

If the vaccines are not given at the same appointment, the clinic may recommend an interval between them. The exact plan should come from the vaccination service because records and personal circumstances change the recommendation.

Bring your vaccination record and mention pregnancy, plans for pregnancy, immune problems, severe allergies, recent blood products, and medicines that affect immunity. Confirm whether another dose is needed and how it will be recorded. Afterward, mild arm soreness, tiredness, or a raised temperature may occur. Drink fluids, rest, and monitor your symptoms. The [Live Attenuated Vaccine](/materials/live-attenuated-vaccine/) page gives background on this vaccine type; details about scheduling are available under [Chickenpox Vaccination](/treatments/preventive-care-and-vaccination/chickenpox-vaccination/).

Call emergency services for breathing difficulty, facial or throat swelling, widespread hives, fainting, or sudden severe weakness after vaccination. Seek prompt medical advice for a severe or ongoing fever, rapidly worsening redness or swelling, confusion, a seizure, or any reaction that feels unusual or serious. A mildly sore arm without worsening symptoms can usually be observed.

Ask whether same-day vaccination is suitable, what interval applies if doses are separated, whether your records show prior protection, and what symptoms should trigger a call.