Characteristics of women of reproductive age with laboratory-confirmed SARS-CoV-2 infection by pregnancy status - United States, January 22-June 7, 2020 - Ellington, S; Strid, P; Tong, V T; Woodworth, K; Galang, R R; Zambrano, L D (MMWR Morb Mortal Wkly Rep, 2020)