Interesting (if slightly disturbing) tool developed by the Centre for Mathematical Modelling of Infectious Diseases at the London School of Hygiene and Tropical Medicine:
https://cmmid-lshtm.shinyapps.io/traveller_screening/
"We find that airport screening for initial symptoms, via thermal scanners or similar, on either exit or entry is unlikely to detect a sufficient proportion of 2019-nCoV infected travellers in order to avoid entry of infected travellers and therefore the potential for seeding of local transmission."
Originally Posted by: Arcus