Why Do We Fall Ill

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Across
  1. 4. Leprosy is caused by
  2. 5. Malaria is caused by a
  3. 6. Polio virus attacks
  4. 7. Which disease is caused by virus?
Down
  1. 1. Yellow fever is spread by
  2. 2. An insect which transmits a disease is known as
  3. 3. Which one is a communicable disease from mosquitoes?