Household factors and the risk of severe COVID-like illness early in the U.S. pandemic. oleh Denis Nash, Saba Qasmieh, McKaylee Robertson, Madhura Rane, Rebecca Zimba, Sarah G Kulkarni, Amanda Berry, William You, Chloe Mirzayi, Drew Westmoreland, Angela Parcesepe, Levi Waldron, Shivani Kochhar, Andrew R Maroko, Christian Grov, CHASING COVID Cohort Study Team