A medical worker collects a swab sample from a teacher for COVID-19 test in Ljubljana, Slovenia, Jan. 25, 2021. Slovenia conducted mass testing of all teachers who will return to in-person teaching on Monday. Kindergartens and the first three grades of primary school will open as planned on Tuesday in nine of Slovenia's 12 regions, the prime minister's office confirmed to local media on Monday. (Photo by Zeljko Stevanic/Xinhua)
