What causes reactions to vaccines?

Related questions

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6. How long after MMR vaccine can side effects occur?
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Tags

1. #antigen
2. #agents
3. #components
4. #residual
5. #allergic
6. #stabilizers
7. #animal
8. #reactions
9. #caused
10. #following
11. #preservatives
12. #other
13. #acute
14. #protein
15. #vaccinations
16. #antimicrobial
17. #might
18. #vaccine