What type of allergies might prevent someone from receiving the MMR vaccine?

The MMR vaccine, which protects against measles, mumps, and rubella, may pose a risk for individuals who have allergies to neomycin and gelatin. Neomycin is an antibiotic that is present in some vaccines, including MMR, and can potentially cause allergic reactions in sensitive individuals. Gelatin is used as a stabilizer in the vaccine and can also trigger allergic responses in those who are allergic to it. Therefore, individuals with known allergies to these components might be advised to avoid the MMR vaccine or undergo further evaluation to assess the risks versus benefits.

Other allergies, such as those to peanuts, shellfish, latex, gluten, eggs, or soy, are not typically associated with increased risk when receiving the MMR vaccine. While individuals with these allergies should always consult with their healthcare provider before vaccination, the primary concerns remain focused on neomycin and gelatin when it comes to the MMR vaccine.