WHY DO WE FALL ILL

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Across
  1. 2. Malfunctioning of any organ or body part.
  2. 4. Diseases which is present by birth.
  3. 8. Quinine is used to kill this pathogen.
  4. 9. A microorganism that doesn't have biochemical machinery.
  5. 11. A chemical produced by the body to fight infections.
Down
  1. 1. Covid-19 can spread through this means.
  2. 3. A disease caused by mosquito bites in Japan.
  3. 5. A protozoan that causes sleeping sickness.
  4. 6. It can be the immediate cause of disease.
  5. 7. A vector for spreading diseases.
  6. 10. A type of disease spread through sexual contact.