West Nile virus serosurvey and assessment of personal prevention efforts in an area with intense epizootic activity: Connecticut, 2000

Tara A. McCarthy, James L. Hadler, Kathleen Julian, Stephen J. Walsh, Brad J. Biggerstaff, Steven R. Hinten, Caroline Baisley, Anthony Iton, Timothy Brennan, Randall S. Nelson, Gary Achambault, Anthony A. Marfin, Lyle R. Petersen

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27 Citations (Scopus)

Abstract

West Nile virus (WNV) can cause large outbreaks of febrile illness and severe neurologic disease. This study estimates the seroprevalence of WNV infection and assesses risk perception and practices regarding potential exposures to mosquitoes of persons in an area with intense epizootics in 1999 and 2000. A serosurvey of persons aged ≥12 years was conducted in southwestern Connecticut during October 10-15, 2000, using household-based stratified cluster sampling. Participants completed a questionnaire regarding concern for and personal measures taken with respect to WNV and provided a blood sample for WNV testing. Seven hundred thirty persons from 645 households participated. No person tested positive for WNV (95% CI: 0-0.5%). Overall, 44% of persons used mosquito repellent, 56% practiced ≥ two personal precautions to avoid mosquitoes, and 61% of households did ≥ two mosquito-source reduction activities. In multivariate analyses, using mosquito repellent was associated with age <50 years, using English as the primary language in the home, being worried about WNV, being a little worried about pesticides, and finding mosquitoes frequently in the home (P<0.05). Females (OR = 2.0; CI = 1.2-2.9) and persons very worried about WNV (OR = 3.8; CI = 2.2-6.5) were more likely to practice ≥ two personal precautions. Taking ≥ two mosquito source reductions was associated with persons with English as the primary language (OR = 2.0; CI = 1.1-3.5) and finding a dead bird on the property (OR = 1.8; CI = 1.1-2.8). An intense epizootic can occur in an area without having a high risk for infection to humans. A better understanding of why certain people do not take personal protective measures, especially among those aged ≥50 years and those whose primary language is not English, might be needed if educational campaigns are to prevent future WNV outbreaks.

Original languageEnglish (US)
Pages (from-to)307-316
Number of pages10
JournalAnnals of the New York Academy of Sciences
Volume951
StatePublished - Jan 1 2001

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West Nile virus
Viruses
Culicidae
Language
Disease Outbreaks
Risk perception
Virus
Nile
Seroepidemiologic Studies
Birds
Virus Diseases
Person
Nervous System Diseases
Pesticides
Blood
Fever
Multivariate Analysis
Sampling
Testing
Infection

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • History and Philosophy of Science

Cite this

McCarthy, T. A., Hadler, J. L., Julian, K., Walsh, S. J., Biggerstaff, B. J., Hinten, S. R., ... Petersen, L. R. (2001). West Nile virus serosurvey and assessment of personal prevention efforts in an area with intense epizootic activity: Connecticut, 2000. Annals of the New York Academy of Sciences, 951, 307-316.
McCarthy, Tara A. ; Hadler, James L. ; Julian, Kathleen ; Walsh, Stephen J. ; Biggerstaff, Brad J. ; Hinten, Steven R. ; Baisley, Caroline ; Iton, Anthony ; Brennan, Timothy ; Nelson, Randall S. ; Achambault, Gary ; Marfin, Anthony A. ; Petersen, Lyle R. / West Nile virus serosurvey and assessment of personal prevention efforts in an area with intense epizootic activity : Connecticut, 2000. In: Annals of the New York Academy of Sciences. 2001 ; Vol. 951. pp. 307-316.
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abstract = "West Nile virus (WNV) can cause large outbreaks of febrile illness and severe neurologic disease. This study estimates the seroprevalence of WNV infection and assesses risk perception and practices regarding potential exposures to mosquitoes of persons in an area with intense epizootics in 1999 and 2000. A serosurvey of persons aged ≥12 years was conducted in southwestern Connecticut during October 10-15, 2000, using household-based stratified cluster sampling. Participants completed a questionnaire regarding concern for and personal measures taken with respect to WNV and provided a blood sample for WNV testing. Seven hundred thirty persons from 645 households participated. No person tested positive for WNV (95{\%} CI: 0-0.5{\%}). Overall, 44{\%} of persons used mosquito repellent, 56{\%} practiced ≥ two personal precautions to avoid mosquitoes, and 61{\%} of households did ≥ two mosquito-source reduction activities. In multivariate analyses, using mosquito repellent was associated with age <50 years, using English as the primary language in the home, being worried about WNV, being a little worried about pesticides, and finding mosquitoes frequently in the home (P<0.05). Females (OR = 2.0; CI = 1.2-2.9) and persons very worried about WNV (OR = 3.8; CI = 2.2-6.5) were more likely to practice ≥ two personal precautions. Taking ≥ two mosquito source reductions was associated with persons with English as the primary language (OR = 2.0; CI = 1.1-3.5) and finding a dead bird on the property (OR = 1.8; CI = 1.1-2.8). An intense epizootic can occur in an area without having a high risk for infection to humans. A better understanding of why certain people do not take personal protective measures, especially among those aged ≥50 years and those whose primary language is not English, might be needed if educational campaigns are to prevent future WNV outbreaks.",
author = "McCarthy, {Tara A.} and Hadler, {James L.} and Kathleen Julian and Walsh, {Stephen J.} and Biggerstaff, {Brad J.} and Hinten, {Steven R.} and Caroline Baisley and Anthony Iton and Timothy Brennan and Nelson, {Randall S.} and Gary Achambault and Marfin, {Anthony A.} and Petersen, {Lyle R.}",
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McCarthy, TA, Hadler, JL, Julian, K, Walsh, SJ, Biggerstaff, BJ, Hinten, SR, Baisley, C, Iton, A, Brennan, T, Nelson, RS, Achambault, G, Marfin, AA & Petersen, LR 2001, 'West Nile virus serosurvey and assessment of personal prevention efforts in an area with intense epizootic activity: Connecticut, 2000', Annals of the New York Academy of Sciences, vol. 951, pp. 307-316.

West Nile virus serosurvey and assessment of personal prevention efforts in an area with intense epizootic activity : Connecticut, 2000. / McCarthy, Tara A.; Hadler, James L.; Julian, Kathleen; Walsh, Stephen J.; Biggerstaff, Brad J.; Hinten, Steven R.; Baisley, Caroline; Iton, Anthony; Brennan, Timothy; Nelson, Randall S.; Achambault, Gary; Marfin, Anthony A.; Petersen, Lyle R.

In: Annals of the New York Academy of Sciences, Vol. 951, 01.01.2001, p. 307-316.

Research output: Contribution to journalArticle

TY - JOUR

T1 - West Nile virus serosurvey and assessment of personal prevention efforts in an area with intense epizootic activity

T2 - Connecticut, 2000

AU - McCarthy, Tara A.

AU - Hadler, James L.

AU - Julian, Kathleen

AU - Walsh, Stephen J.

AU - Biggerstaff, Brad J.

AU - Hinten, Steven R.

AU - Baisley, Caroline

AU - Iton, Anthony

AU - Brennan, Timothy

AU - Nelson, Randall S.

AU - Achambault, Gary

AU - Marfin, Anthony A.

AU - Petersen, Lyle R.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - West Nile virus (WNV) can cause large outbreaks of febrile illness and severe neurologic disease. This study estimates the seroprevalence of WNV infection and assesses risk perception and practices regarding potential exposures to mosquitoes of persons in an area with intense epizootics in 1999 and 2000. A serosurvey of persons aged ≥12 years was conducted in southwestern Connecticut during October 10-15, 2000, using household-based stratified cluster sampling. Participants completed a questionnaire regarding concern for and personal measures taken with respect to WNV and provided a blood sample for WNV testing. Seven hundred thirty persons from 645 households participated. No person tested positive for WNV (95% CI: 0-0.5%). Overall, 44% of persons used mosquito repellent, 56% practiced ≥ two personal precautions to avoid mosquitoes, and 61% of households did ≥ two mosquito-source reduction activities. In multivariate analyses, using mosquito repellent was associated with age <50 years, using English as the primary language in the home, being worried about WNV, being a little worried about pesticides, and finding mosquitoes frequently in the home (P<0.05). Females (OR = 2.0; CI = 1.2-2.9) and persons very worried about WNV (OR = 3.8; CI = 2.2-6.5) were more likely to practice ≥ two personal precautions. Taking ≥ two mosquito source reductions was associated with persons with English as the primary language (OR = 2.0; CI = 1.1-3.5) and finding a dead bird on the property (OR = 1.8; CI = 1.1-2.8). An intense epizootic can occur in an area without having a high risk for infection to humans. A better understanding of why certain people do not take personal protective measures, especially among those aged ≥50 years and those whose primary language is not English, might be needed if educational campaigns are to prevent future WNV outbreaks.

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