Stock Photo - 24 February 2021, Saxony, Leipzig: At the Institute of Environmental Microbiology at the Helmholtz Centre for Environmental Research (UFZ), biology lab technician Franziska Beier prepares PCR tests for coronaviruses in wastewater samples from sewage treatment plants. Together with researchers from the TU Dresden, they are working on the development of an early warning system for the SARS-CoV-2 infection level of the population. Around 2,500 samples were collected from sewage treatment plants in Germany and screened for the genetic material of the coronavirus using a PCR test. Photo: Waltraud Grubitzsch/dpa-Zentralbild/dpa. - Leipzig/Saxony/Germany

Stock Photo: 24 February 2021, Saxony, Leipzig: At the Institute of Environmental Microbiology at the Helmholtz Centre for Environmental Research (UFZ).

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