Pandemic puzzle

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Across
  1. 4. pandemic
  2. 6. a limiting condition or measure, especially a legal one
  3. 11. to act as an antigen without inducing the disease.
  4. 12. disturbance which interrupt an event, activity,process.
  5. 13. try out
  6. 14. widespread
  7. 16. corona
  8. 18. die
  9. 20. a secondary disease an already existing one.
  10. 21. extreme anxiety,
Down
  1. 1. a breeze or light wind.
  2. 2. the power to restrain something,
  3. 3. a serious, dangerous situation requiring immediate action.
  4. 5. a condition characterized by a set of associated symptoms.a physical which is regarded as indicating a disease,
  5. 7. a danger or risk
  6. 8. a blood protein produced in response to a counteracting
  7. 9. serving as a symptom or sign
  8. 10. the state of being free from illness or injury.
  9. 15. an infection or disease
  10. 17. shutdown
  11. 19. movement