87
4. Broad footpaths
5. Clean street/walls
6. Comfortable temperature
7. Underground sewage
8. Parks/playground/breathing spaces
9. Comfortable noise/silence
10. Habitats for birds
4.4 Disease Surveillance
Disease surveillance is a continuous, systematic collection, analysis as well as interpretation of health-related data.
Surveillance is needed to:
1. Serve as an early warning system
2. Guide public health policy and strategies
Fig. 4.12 Waste burning
in residential area
4.4 Disease Surveillance