FILE PHOTO: Professor Gottfried Kremsner injects a vaccination against the coronavirus disease (COVID-19) from German biotechnology company CureVac to a volunteer at the start of a clinical test series at his tropical institute of the university clinic in Tuebingen, Germany, June 22, 2020. REUTERS/Kai Pfaffenbach/File Photo
FILE PHOTO: Professor Gottfried Kremsner injects a vaccination against the coronavirus disease (COVID-19) from German biotechnology company CureVac to a volunteer at the start of a clinical test series at his tropical institute of the university clinic in Tuebingen, Germany, June 22, 2020. REUTERS/Kai Pfaffenbach/File Photo
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