1. Hurricane Rita Vector Control Issues and the DSHS Response Diseases In Nature June 13, 2007 Austin, Texas

2. Vector Control Issues Mosquitoes Floodwater mosquitoes Standing water mosquitoes

3. Mosquitoes The clock starts ticking when water flow stops. Time of emergence is dependent upon species

4. Hurricane Rita and Mosquito Control Pre-landfall events Landfall Post-landfall events

5. Pre-landfall Events

6. State Operations Center (SOC)

7. DSHS Entomologist Conferences with State Epidemiologist concerning mosquito control activities following landfall Conferences with CDC Entomologists offering assistance following landfill

10. 2,000,000 people without electricity for several weeks

11. Rainfall ranged from 6- 10 inches in some areas

12. Coastal tidal surges reportedly ranged from 4 – 15 feet

13. Creation of new mosquito breeding sites

14. Joint Field Office (JFO)

15. Restoration of electrical power

16. Debris removal and clean-up efforts

17. Mosquito Control: The Science Bionomics of species Documented Mosquito Landing Rate Counts Data reflect trends Insecticide Application Too soon = no control Too late = no or little control

18. Egg deposition sites for salt- marsh mosquitoes

19. Aedes sollicitans, Salt-Marsh mosquito

20. Mosquito Landing Rate Count Locations representative of area Same time Same observer Number of mosquitoes landing/minute

21. Mosquito Landing Rate Count

22. Surveillance Demonstrate need for application of insecticides (FEMA required) Evaluation Effectiveness of insecticide applications (FEMA required)

23. Mosquito Landing Rate Count Total number of documented adult mosquitoes that land in one minute on the front of one leg from the waist to the foot FEMA/CDC determine the threshold number FEMA/CDC set the time frame for mosquito control activities

24. Mosquito Landing Rate Count Documented 70+ per minute in Port Arthur, Jefferson County 40+ per minute in Bridge City, Orange County 30 per minute in Hardin County

25. U.S. Air Force Aerial Spraying Orange, Jefferson, Chambers Counties Documented Pre-spraying mosquito landing rate counts Documented Post-spraying mosquito landing rate counts

26. National Wildlife Areas/Preserves NO SPRAY ZONES

28. U.S. Air Force Entomological Field Team Air Force Institute of Operational Health, Brooks City-Base, Texas Documented Pre-spraying mosquito landing rate counts Recommended USAF Aerial Spray for portions of Hardin, Jasper and Newton counties based on their data

30. Ground ULV Unit

31. Acknowledgements Dr.Tom Betz, Acting State Epidemiologist, DSHS Dr. James Wright, DSHS, PHR 4/5

32. Acknowledgements Chambers County Mosquito Control District Lawrence Lewis Jefferson County Mosquito Control District Lee Chastant Orange County Mosquito Control District Patrick Beebe

33. Acknowledgements CDC Dr. Roger Nasci Dr. Janet McAllister USAF Major Mark Breidenbaugh, Aerial Spray Flight Dr. Chad McHugh, Entomology Field Team Leader DOD Captain John Morning