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Volume 15, Number 3—March 2009
Letter

Delinquent Mortgages, Neglected Swimming Pools, and West Nile Virus, California

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To the Editor

Reisen et al. illustrated the potential relationship between environmental developments, such as those that result from major economic events, and increased risks for infectious diseases (1). The Institute of Medicine landmark report in 1992 on emerging pathogens (2) and the initiative of the Centers for Disease Control and Prevention in 1994 (which helped give rise to the Emerging Infectious Diseases journal) note the role of environmental phenomena in spawning some infectious diseases.

The Reisen et al. report also reflects the utility and limitations of ecologic studies and the legitimacy of simultaneously concluding that study findings are “hypothesis generating” from a scientific perspective yet sufficiently plausible to prompt public health interventions from a practical perspective. The report demonstrates the value of synthesizing multiple streams of surveillance data, observations from field investigations, and contextual awareness of community events to generate hypotheses that bear exploration—in this case, the hypothesis that increases in mosquito habitats resulting from abandonment of swimming pools cause increases in the incidence of West Nile virus (WNV) cases. Scientifically, this question was not definitively answered because the study could not directly assess the putative link between disease and exposures to WNV-infected mosquitoes that had bred in abandoned swimming pools in California.

Beyond a priori knowledge that abandoned swimming pools provide opportunities for mosquito breeding (and other hazards, such as drowning), this report raises other critically important questions, such as what action should be taken in response to such findings and how should the findings be communicated to the public? Practically, questions about the link between abandoned swimming pools and illness were sufficiently answered so that public and environmental health officials could respond, as manifested by Kern County’s West Nile Virus Strategic Response Plan (3) and related strategies, including the Fight the Bite campaign, which calls for reporting of neglected swimming pools (4). Knowledge regarding the study’s limitations about causality should not detract from these efforts, as has been recognized by other sectors, such as the mortgage industry (5).

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Richard A. GoodmanComments to Author  and James W. Buehler

Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (R.A. Goodman); Emory University, Atlanta (J.W. Buehler)

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References

  1. Reisen  WK, Takahashi  RM, Carroll  BD, Quiring  R. Delinquent mortgages, neglected swimming pools, and West Nile virus, California. Emerg Infect Dis. 2008;14:17479. DOIPubMed
  2. Institute of Medicine. Emerging infections: microbial threats to health in the United States. Washington: National Academy Press, 1992.
  3. Kern County Department of Public Health. Kern County West Nile virus strategic response plan, May 2008 [cited 2009 Jan 23]. Available from http://www.co.kern.ca.us/health/wnvStrategicResponsePlan.pdf
  4. Kern County Department of Public Health. Fight the bite! [cited 2009 Jan 28]. Available from http://www.co.kern.ca.us/health/GreenPool.pdf
  5. Foreclosures loom as possible public health menace. Mortgage News Daily. 2008 Aug 18 [cited 2009 Jan 28]. Available from http://www.mortgagenewsdaily.com/8182008_Foreclosures_West_Nile.asp

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Cite This Article

DOI: 10.3201/eid1503.081489

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Table of Contents – Volume 15, Number 3—March 2009

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Please use the form below to submit correspondence to the authors or contact them at the following address:

Richard A. Goodman, Public Health Law Program, Centers for Disease Control and Prevention, 1600 Clifton Rd, Mailstop D30, Atlanta, GA 30333, USA

William K. Reisen, Center for Vector-borne Diseases, University of California, Old Davis Rd, Davis, CA 95616, USA

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Page created: December 07, 2010
Page updated: December 07, 2010
Page reviewed: December 07, 2010
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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