Photo de stock - 10 May 2021, North Rhine-Westphalia, Essen: Kamuran Turan, teacher of Klaase 3a at Maria Kunigunda Primary School, explains the ""Lolli Test"" to her pupils. On Monday, North Rhine-Westphalia is introducing so-called Lolli tests across the board at all primary and special schools. With the test, all of the more than 730,000 students of the nearly 3,800 elementary and special schools will be tested twice a week in their respective learning groups for the coronavirus. Photo: Roland Weihrauch/dpa - ATTENTION: The information on the bag has been pixelated for legal reasons. - Essen/North Rhine-Westphalia/Germany

Photo de stock: 10 May 2021, North Rhine-Westphalia, Essen: Kamuran Turan, teacher of Klaase 3a at Maria Kunigunda Primary School, explains the ""Lolli Test"" to her pupils.

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