Environmental Assessment and Information Technology Program

Virus ParticleMission: The mission of the Environmental Assessment and Information Technology Program (EAIT) is to develop modern methods of management of vectorborne disease research and surveillance data, to develop predictive models based on these data, and to facilitate sharing of research and surveillance data among California agencies cooperating in the prevention and control of vectorborne diseases in California. Included in this mission is the development of public and collaborative websites providing interactive information on vectorborne diseases in California.


Support: Research and development activities relating to EAIT are supported by grants to Dr. William Reisen and Dr. Chris Barker from the National Institutes of Health, the National Oceanic and Atmospheric Administration, the Centers for Disease Control and Prevention, the National Aeronautics and Space Administration, the University of California Mosquito Research Program, and the Coachella Valley, Greater Los Angeles County, Kern, and Sacramento-Yolo Mosquito and Vector Control Districts.


Personnel: Personnel are stationed on Old Davis Road south of the main UCD campus. EAIT is under the direction of Dr. Bruce Eldridge. Bborie Park serves as Programmer/Network administrator. He is the author of the California Vectorborne Surveillance Gateway. Dr. Chris Barker is an Assistant Research Epidemiologist who is developing models to predict mosquito abundance and mosquitoborne viral activity in California based on climatic, edaphic, and land-use factors. Dr. William Reisen coordinates activities of the program with those of the Arbovirus Research Program that he directs.


Collaboration: There is extensive collaboration with Drs. Daniel Cayan and Michael Dettinger and Mary Tyree of the Scripps Institution of Oceanography at University of California, San Diego. These scientists are relating temporal and spatial changes in mosquito abundance and virus activity to long and short term climatic variation. Remotely sensed data are included in collaboration with Forrest Melton and Dr. Brad Lobitz of NASA Ames Research Center. Mathematical models of West Nile virus are being developed in collaboration with Dr. David Hartley and Dr. Tianchan Niu of Georgetown University and Dr. Arnaud Le Menach of the Health Protection Agency, London.


Key accomplishments:

  • Development of web-based interactive mapping for visualization of surveillance data.
  • Development of the California Vectorborne Disease Gateway, a complete mosquitoborne virus surveillance management system.
  • Development of the CalSurv vectorborne disease website based on Drupal, a system for multi-author content management.


Selected Publications:

  • Barker CM, Reisen WK, Kramer VL. 2003. California state Mosquito-borne Virus Surveillance and Response Plan: a retrospective evaluation using conditional simulations. Am J Trop Med Hyg 68: 508-518.
  • Barker CM, Reisen WK, Kramer VL, Husted S, Hom A, Eldridge BF. 2004. An improved system for objective statewide trap stratification based on human population density. Proc Mosq Vector Control Assoc Calif 72: 28-32.
  • Barker CM, Reisen WK, Eldridge BF. 2005. Factors affecting the probability of mosquito-borne virus activity in California vector control districts, 1982-2003. Proc Mosq Vector Contr Assoc Calif 73:78-86.
  • Marcus L, Eldridge BF, Lewis S, Barker C, Nastoff T, Crawford C, Richman L, Westmoreland R, Husted S, Kramer V. 2005. The development of the California Department of Public Health West Nile virus website (westnile.ca.gov) as a tool for local agencies, information distribution to the public, passive surveillance, and public educators. Proc Mosq Vector Contr Assoc Calif 73:89.
  • Eldridge BF, Barker CM, Reisen WK, Baylis E, Hom A. 2006. Use of sentinel chickens in California for arbovirus surveillance, 1962-2005: data aggregation and analysis. Proc Mosq Vector Control Assoc Calif 74: 55-58.
  • Eldridge, BF, Park, BK. 2007. CalSurv: One-stop Shopping for Vectorborne Disease Surveillance. Proc Mosq Vector Contr Assoc Calif 75: [in press].
  • Barker CM, Reisen WK, Eldridge BF, Johnson WO, Gill J. 2007. Dynamics of Culex tarsalis in the Sacramento Valley of California. Proc Mosq Vector Contr Assoc Calif 75: [in press].