Stock Photo - 20 December 2022, Lower Saxony, Hanover: Holger Drotleff, biology laboratory technician at the Lower Saxony State Health Office, examines PCR-positive samples under a microscope. In doing so, he examines the condition of cell cultures exposed to the sample material. A high number of respiratory infections are currently being registered in Lower Saxony. Photo: Michael Matthey/dpa. - Hanover/Lower Saxony/Germany

Stock Photo: 20 December 2022, Lower Saxony, Hanover: Holger Drotleff, biology laboratory technician at the Lower Saxony State Health Office.

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