Vaccination

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Across
  1. 1. Infectious agent that replicates in living hosts
  2. 4. The spreading of a virus
  3. 5. financial strategy
  4. 7. small single-celled organism
  5. 8. "we stand on guard for thee"
Down
  1. 1. preventative medicine
  2. 2. AKA the flu
  3. 3. Infectious disease spread across a large region
  4. 6. a course we all have in common