preventing infection

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Across
  1. 4. bacterium protected by a hard shell
  2. 5. administration of a vaccine to produce immunity
  3. 7. disinfectant that can be applied to skin or tissue
  4. 8. plants that live on other plants or animals
  5. 9. another name for a microorganism
  6. 10. environment in which microorganisms live and grow
  7. 12. communicable
Down
  1. 1. process by which pathogens are destroyed
  2. 2. absence of pathogens
  3. 3. acquired infection acquired after admission into a health care facility
  4. 5. extremely small microorganisms that grow into living cells
  5. 6. one cell microscopic animals
  6. 11. small living plant or animal that cannot be seen without a microscope