Legionnaires Disease Crossword

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Across
  1. 3. Sometimes required in the most severe cases
  2. 5. The system that Legionnaires Disease mostly affects
  3. 6. The best way to treat Legionnaires Disease
  4. 7. Where the Alliance to Prevent Legionnaires' Disease is located
Down
  1. 1. Respiratory disease that has much in common with Legionnaires Disease
  2. 2. The main way Legionnaires Disease is spread.
  3. 4. The subject of this crossword.