A SARS-CoV-2 omicron (B.1.1.529) variant outbreak in a primary school in Geneva, Switzerland

Lorthe E, Bellon M, Berthelot J, Michielin G, L'Huillier AG, Posfay-Barbe KM, Azman AS, Guessous I, Maerkl SJ, Eckerle I, Stringhini S,