Infectious disease crossword puzzle

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Across
  1. 2. Microscopic unicellular eukaryotes
  2. 5. exposed to a disease
  3. 7. infectious agent
  4. 8. a branch of medicine
  5. 9. unicellular microorganisms
  6. 10. Wide spread of a disease in a small area
Down
  1. 1. An immunity substance to a disease
  2. 2. An organism causing disease to its host
  3. 3. A widespread of an infectious disease
  4. 4. microorganism
  5. 6. Start of something violent