Foto: "<a href="https://ccnull.de/foto/graph-showing-new-covid-19-cases-during-the-third-wave-of-the-pandemic/1047408" target="_blank">Graph showing new covid-19 cases during the third wave of the pandemic</a>" von <a href="https://ccnull.de/fotograf/marco-verch" target="_blank">Marco Verch</a> via <a href="https://ccnull.de" target="_blank">ccnull.de</a> - <a href="https://www.flickr.com/photos/30478819@N08/51061378867/" target="_blank">Bildquelle</a>, <a href="https://creativecommons.org/licenses/by/2.0/de/" target="_blank">CC-BY 2.0</a>