Some symptoms may be caused by the vaccine, e.g. redness at the injection site.
Other problems may occur by chance and are not related to the vaccine, e.g. cold, gastro, headache.
MMR-Var vaccine is safe. Most reactions are harmless and do not last long.
|Frequency||Possible reactions to the vaccine|
In most cases
Less than 1 person in 1 million
What to Do after Vaccination
Tips to follow immediately following vaccination
Wait 15 minutes before leaving premises where vaccine is received. If an allergic reaction occurs, the symptoms will appear a few minutes after the vaccination.
If you feel side effects, immediately inform the person giving the vaccine. That person will be able to treat you immediately.
Tips to follow at home
If you experience redness, pain or swelling at the injection site, apply a cold, damp compress on it.
Use medication for fever or discomfort if needed.
Do not give medication containing aspirin (acetylsalicylic acid) to people under age 18 for 6 weeks following their vaccination.
Cover the blisters. If this is not possible, contacts with premature newborns and people with weakened immune system should be avoided as long as these blisters are present.
When to Seek Medical Help
See a doctor if one of the following applies to you:
You experience serious and unusual symptoms
Your symptoms get worse instead of improving
Your symptoms last over 48 hours
Last update: June 25, 2015