The Great Serum Race

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Across
  1. 2. an illness that spreads and affects a lot of people
  2. 6. died
  3. 8. the act of separating people who have a contagious disease from people who are healthy
  4. 10. a medicinal liquid used to battle an illness
  5. 11. difficult; dangerous
  6. 12. the time when the sun is beyond the horizon, but its light is still visible
Down
  1. 1. a struggle; a dangerous and difficult situation
  2. 3. mysterious; scary
  3. 4. signs of illness or disease
  4. 5. materials transported in a train or vehicle
  5. 7. to walk through water
  6. 9. people who are in charge of dog sleds