Activity 1: First Notes

Directions: Fill in the boxes with the appropriate letters to complete the words referred to by the clues given across and down.

Across:
1. a sign of the existence of something
5. process of making impure by polluting
7. disinfect
9. microscopic infective agent
10. tending to move about frequently
13. improved further
14. showing no symptoms
Down:
2. found over a large area
3. sickness, illness
4. group of people living in the same place
6. widespread
8. state of separating people with infectious disease
11. return to a normal state of health
12. separation/segregation​