Is hepatitis B vaccine effective?

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  1. #effective
  2. #immunized
  3. #vaccine
  4. #before
  5. #three
  6. #provides
  7. #hepatitis
  8. #being
  9. #children
  10. #adults
  11. #protection
  12. #doses
  13. #after
  14. #virus
  15. #infection
  16. #exposed
  17. #preventing
  18. #infants
  19. #greater
  20. #receiving