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reThe infection numbers reported daily are currently unreliable because the testing strategy has changed and since then there has been less testing overall. In most cases, health authorities cannot find out where the virus was contracted.
In order to judge the success or failure of the “closing light,” one should at least know if it means that people don’t really meet other people in their spare time. “We cannot determine the contacts directly, but we can infer them indirectly from the movements of people,” explains Frank Schlosser of the “Complex Systems Lab,” a working group that both the Robert Koch Institute and the Humboldt University of Berlin listened to. Researchers obtain information about these movements from mobile phones that most people carry with them.
As part of the “Covid-19 Mobility Project,” Schlosser and his colleagues are analyzing the data for Germany. The conclusion so far is:
