Integrating GIS into West Nile Virus Planning and Surveillance

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1 Integrating GIS into West Nile Virus Planning and Surveillance Fairfax County Health Department Adrian Joye, Environmental Health Specialist

2 Agenda Background/Benefits Routes/Trap Locations Dead Bird Complaint Monitoring Human Cases Weekly Larvicide Tracking Barrier Sprays Public Outreach/Web Site

3 What is GIS? Information system that is capable of integrating, storing, editing, analyzing, sharing, and displaying spatial data. Primary components are hardware, software, data, user

5 Reasons To Use Maps Maps are important communication and decision support tools Maps are both storage mechanisms Many maps today are interactive via internet The end product for GIS systems Powerful visualization tool

6 Map Benefits Maps are worth 1000 words A map design is supposed to tell the complete story of the map and include all necessary information needed to interpret the map Highlights patterns and information that is not easily understood Today a map is worth a 1000 bytes

7 Tools Used ArcGIS 9.1 Trimble GeoXT GPS unit Terrasync Pro Pathfinder Office

8 Examples of GIS Layers Parcel Data (property boundaries) Storm Sewer Network Water Features Demographics Population Density Aerial Photography Transportation Network Building Footprints

9 Route Maps and Trap Locations Routes are identified and driven with GPS units in the vehicle Traps are mapped as point features Aerial imagery is added for each trap site Composite route/trap maps created for seasonal staff Route books created for each route

10 Trap Locations Collection Route

11 Individual Trap Site Storm sewer network Building footprints Aerial photography Road network

12 Huntington Area Traps:

13 Trap sites and impervious areas Building footprints and paved areas shown Ensure trap distribution over diverse area

14 Political Districts

15 Mosquito Surveillance

16 Multi-Year Comparisons Display and compare data from multiple years

17 Dead Bird Reporting Dead bird complaints collected daily in Excel spreadsheet Data is geocoded Non-matches are manually added Symbolized by species

18 Dead Bird Reporting

19 Geocoding

20 Composite Data: Positive traps and dead bird complaints Trap sites shown Symbolized by species Number of positives indicated Dead bird layer added

21 Human Cases Data is received from DCLS Human cases are added manually Point placed on street centerline to obscure exact location

22 Weekly Larvicide Tracking Over 35,000 catch basins treated, 3 times a year Identifies area treated Reported in 1 square mile map grids Data is collected weekly

23 Barrier Spray Dry run is made with GPS equipment Shapefile of treatment area is layered over orthophotography Maps produced for staff review and official comment

24 Arlington Terrace Barrier Treatment Area

25 Fairfax County Web Site

26 GIS Day

27 Summary GIS has proven to be a valuable tool Simple method to enable visualization and integration of data from various sources Can be used effectively to track, monitor and combat disease

28 Acknowledgements: Base Data - Fairfax County Office of Mapping and GIS 2002 Aerial Imagery State of Virginia Fairfax County Disease Carrying Insect Program

29 Questions/Comments?

GIS for Integrated Pest Management. Christina Hailey. Abstract:

GIS for Integrated Pest Management Christina Hailey Abstract: At its formation in 1965, Harris County Mosquito Control (Houston, Texas) (HCMC) was primarily involved in the prevention and control of mosquito-borne