An Online Report of a study by the USA’s Center for Disease Control: Comparison of 3 Infrared Thermal Detection Systems and Self-Report for Mass Fever Screening CDC’s EID Journal | Volume 16, Number 11???November 2010
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 (? = 0.43) and FLIR (? = 0.42) but significantly lower for Wahl (? = 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.
From a report published in the CDC Journal EID (Emerging Infectious Diseases) by 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): Vol. 16, No. 11 ??? November 2010
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 [serial on the Internet]. 2010 Nov [date cited]. http://www.cdc.gov/EID/content/16/11/1710.htm