VALUABLE VACCINES

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Across
  1. 2. Appearance
  2. 4. Necessary; required
  3. 7. Easy to spread
  4. 9. Affected with a disease-causing organism
  5. 10. Indication
  6. 11. Dispense; deliver
  7. 13. Warning
  8. 14. Deadly; fatal
  9. 15. Poisons
  10. 18. Answer
  11. 21. Think about
  12. 22. Confused
  13. 26. Face-to-face
  14. 28. Process of making a person or animal resistant to infection
  15. 29. At the same time
  16. 30. Ridiculous
  17. 33. Living; organic
  18. 34. Outlook; viewpoint
Down
  1. 1. Trainee
  2. 3. Grasp; understand
  3. 5. Vaccination through injection
  4. 6. Prompts; stimulates
  5. 8. Eliminate; get rid of
  6. 12. Authentic; correct
  7. 16. Creation
  8. 17. Tools
  9. 19. Balance; counteract
  10. 20. Awful; horrible; terrible
  11. 23. Close; impending
  12. 24. Effective
  13. 25. Obtained
  14. 27. Recognise
  15. 31. Ill; unwell
  16. 32. A dose of vaccine that increases or renews the effect of an earlier one.