Polish border guards use a thermal scanner to check the temperature of driver at the Polish side of the Kalvarija-Budzisko check point in Poland, Tuesday, March 20, 2020. TTraffic jams swelled along borders and travelers appealed to their governments for help getting home Tuesday as countries in Europe and beyond imposed strict controls along their frontiers and grappled with the challenge of allowing the flow of goods but restricting people to slow the spread of the coronavirus. For most people, the new coronavirus causes only mild or moderate symptoms. For some it can cause more severe illness. (AP Photo/Mindaugas Kulbis), APTOPIX