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Published on: September 14, 2018
Comparison of 3 infrared thermal detection systems and self-report for mass fever screening
An V Nguyen1, Nicole J Cohen, Harvey Lipman
1Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA.
Abstract:
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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01:14Assessing Body Temperature - Oral
Step 1:
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Step 2:
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Step 3:
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Step 4:
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01:27Assessing Body Temperature - Rectal
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01:19Assessing Body Temperature - Temporal Artery
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01:13Equipments Used to Measure Body Temperature
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01:14Assessing Body Temperature - Axilla
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