Giuseppe
Emeritus
Comparison of 3 Infrared Thermal Detection Systems and Self-Report for Mass Fever Screening (Emerg Infect Dis., abstract, edited)
[Source: US Centers for Disease Control and Prevention, Emerging Infectious Diseases Journal, full PDF Document (LINK). Abstract, edited.]
DOI: 10.3201/eid1611.100703
Suggested citation for this article: Nguyen AV, Cohen NJ, Lipman H, Brown CM, Molinari N-A, Jackson WL, et al. Comparison of 3 infrared thermal detection systems and self-report for mass fever screening. Emerg Infect Dis. 2010 Nov; [Epub ahead of print]
Comparison of 3 Infrared Thermal Detection Systems and Self-Report for Mass Fever Screening
An V. Nguyen, Nicole J. Cohen, Harvey Lipman,1 Clive M. Brown, Noelle-Angelique Molinari, William L. Jackson, Hannah Kirking, Paige Szymanowski, Todd W. Wilson, Bisan A. Salhi, Rebecca R. Roberts, David W. Stryker, and Daniel B. Fishbein
Author affiliations:
Centers for Disease Control and Prevention, Atlanta, Georgia, USA (A.V. Nguyen, N.J. Cohen, H. Lipman, C.M. Brown, N.A. Molinari, W.L. Jackson, H. Kirking, P. Szymanowski, T.W. Wilson, D.B. Fishbein); Council of State and Territorial Epidemiologists, Atlanta (A.V. Nguyen); Emory University, Atlanta (P. Szymanowski, B.A. Salhi); John H. Stroger, Jr. Hospital of Cook County, Chicago, Illinois, USA (R.R. Roberts); and Presbyterian Healthcare Services, Albuquerque, New Mexico, USA (D.W. Stryker)
(1) Deceased.
Despite limited evidence regarding their utility, infrared thermal detection systems (ITDS) are increasingly being used for mass fever detection. We compared temperature measurements for 3 ITDS (FLIR ThermoVision A20M [FLIR Systems Inc., Boston, MA, USA], OptoTherm Thermoscreen [OptoTherm Thermal Imaging Systems and Infrared Cameras Inc., Sewickley, PA, USA], and Wahl Fever Alert Imager HSI2000S [Wahl Instruments Inc., Asheville, NC, USA]) with oral temperatures (>100?F = confirmed fever) and self-reported fever. Of 2,873 patients enrolled, 476 (16.6%) reported a fever, and 64 (2.2%) had a confirmed fever. Self-reported fever had a sensitivity of 75.0%, specificity 84.7%, and positive predictive value 10.1%. At optimal cutoff values for detecting fever, temperature measurements by OptoTherm and FLIR had greater sensitivity (91.0% and 90.0%, respectively) and specificity (86.0% and 80.0%, respectively) than did self-reports. Correlations between ITDS and oral temperatures were similar for OptoTherm (ρ = 0.43) and FLIR (ρ = 0.42) but significantly lower for Wahl (ρ = 0.14; p<0.001). When compared with oral temperatures, 2 systems (OptoTherm and FLIR) were reasonably accurate for detecting fever and predicted fever better than self-reports.
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[Source: US Centers for Disease Control and Prevention, Emerging Infectious Diseases Journal, full PDF Document (LINK). Abstract, edited.]
DOI: 10.3201/eid1611.100703
Suggested citation for this article: Nguyen AV, Cohen NJ, Lipman H, Brown CM, Molinari N-A, Jackson WL, et al. Comparison of 3 infrared thermal detection systems and self-report for mass fever screening. Emerg Infect Dis. 2010 Nov; [Epub ahead of print]
Comparison of 3 Infrared Thermal Detection Systems and Self-Report for Mass Fever Screening
An V. Nguyen, Nicole J. Cohen, Harvey Lipman,1 Clive M. Brown, Noelle-Angelique Molinari, William L. Jackson, Hannah Kirking, Paige Szymanowski, Todd W. Wilson, Bisan A. Salhi, Rebecca R. Roberts, David W. Stryker, and Daniel B. Fishbein
Author affiliations:
Centers for Disease Control and Prevention, Atlanta, Georgia, USA (A.V. Nguyen, N.J. Cohen, H. Lipman, C.M. Brown, N.A. Molinari, W.L. Jackson, H. Kirking, P. Szymanowski, T.W. Wilson, D.B. Fishbein); Council of State and Territorial Epidemiologists, Atlanta (A.V. Nguyen); Emory University, Atlanta (P. Szymanowski, B.A. Salhi); John H. Stroger, Jr. Hospital of Cook County, Chicago, Illinois, USA (R.R. Roberts); and Presbyterian Healthcare Services, Albuquerque, New Mexico, USA (D.W. Stryker)
(1) Deceased.
Despite limited evidence regarding their utility, infrared thermal detection systems (ITDS) are increasingly being used for mass fever detection. We compared temperature measurements for 3 ITDS (FLIR ThermoVision A20M [FLIR Systems Inc., Boston, MA, USA], OptoTherm Thermoscreen [OptoTherm Thermal Imaging Systems and Infrared Cameras Inc., Sewickley, PA, USA], and Wahl Fever Alert Imager HSI2000S [Wahl Instruments Inc., Asheville, NC, USA]) with oral temperatures (>100?F = confirmed fever) and self-reported fever. Of 2,873 patients enrolled, 476 (16.6%) reported a fever, and 64 (2.2%) had a confirmed fever. Self-reported fever had a sensitivity of 75.0%, specificity 84.7%, and positive predictive value 10.1%. At optimal cutoff values for detecting fever, temperature measurements by OptoTherm and FLIR had greater sensitivity (91.0% and 90.0%, respectively) and specificity (86.0% and 80.0%, respectively) than did self-reports. Correlations between ITDS and oral temperatures were similar for OptoTherm (ρ = 0.43) and FLIR (ρ = 0.42) but significantly lower for Wahl (ρ = 0.14; p<0.001). When compared with oral temperatures, 2 systems (OptoTherm and FLIR) were reasonably accurate for detecting fever and predicted fever better than self-reports.
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