Isaiah's Puzzle

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Across
  1. 1. signs of an illness
  2. 3. died
  3. 4. liquid medicine
  4. 7. separating from others due to illness
  5. 8. contagious illness
  6. 9. struggle
Down
  1. 2. drivers of dog sleds
  2. 5. mysterious
  3. 6. items being shipped by boat or train