12-yearsold Nicole (L) holds the hand of her twin sister Jessica as she gets her vaccination with the BioNTech vaccine at the district vaccination center in Ludwigsburg, southern Germany, on August 3, 2021, amid the ongoing coronavirus COVID-19 pandemic. - Germany will start offering Covid booster shots from September and make it easier for 12-to-17 year olds to get a jab, the health ministry said on August 2, 2021, amid concerns about the spread of the Delta variant. (Photo by THOMAS KIENZLE / AFP)