International Organization for Standardization  (ISO)
A Technical Reference providing general guidelines for the deployment, implementation and operation of infrared cameras (a screening thermograph) intended to be used for individual non-invasive febrile temperature screening of humans under indoor environmental conditions to prevent the spread of infection

IEC 80601-2-59:2008 - Medical electrical equipment -- Part 2-59: Particular requirements for basic safety and essential performance of screening thermographs for human febrile temperature screening