TITLE Increased household transmission and immune escape of the SARS-CoV-2 Omicron compared to Delta variants AUTHOR/ORCID/PRIMARY AFFILIATION Neda Jalali, 0000-0002-1202-5219 Norwegian Institute of Public Health, Dept. of Methods Development and Analytics, Oslo, Oslo Hilde Kjelgaard Brustad, null University of Oslo, Norway Arnoldo Frigessi, null University of Oslo, Basic Medicine, Oslo, Norway Emily Ann MacDonald, null Norwegian Institute of Public Health, Dept. of Infection Control and Preparedness, Oslo, Oslo, Norway Hinta Meijerink, null Norwegian Institute of Public Health, Dept. of Infection Control and Vaccines, Oslo, Oslo, Norway Siri Laura Feruglio, null Norwegian Institute of Public Health, Dept. of Infection Control and Preparedness, Oslo, Oslo, Norway Karin Maria Nygård, null Norwegian Institute of Public Health, Dept of Infection Control and Preparedness, Oslo, Oslo, Norway Gunnar Øivind Isaksson Rø, null Norwegian Institute of Public Health, Dept. of Methods Development and Analytics, Oslo, Oslo Elisabeth Henie Madslien, 0000-0002-1161-1208 Norwegian Institute of Public Health, Dept. of Infection Control and Preparedness, Oslo, Oslo, Norway Birgitte Freiesleben de Blasio, 0000-0003-4717-9805 Norwegian Institute of Public Health, Dept. of Methods Development and Analytics, Oslo, Norway FUNDING DETAILS Birgitte Freiesleben de Blasio, Norges Forskningsråd (Research Council of Norway), Funder id 501100005416, 312721 Birgitte Freiesleben de Blasio, NordForsk, Funder id 501100004785, 105572 AUTHOR CONTRIBUTIONS