Transmission of SARS‐CoV‐2 in standardised first few X cases and household transmission investigations: A systematic review and meta‐analysis. - Lewis, Hannah C.; Marcato, Adrian J.; Meagher, Niamh; Valenciano, Marta; Villanueva‐Cabezas, Juan‐Pablo; Spirkoska, Violeta; Fielding, James E.; Karahalios, Amalia; Subissi, Lorenzo; Nardone, Anthony; Cheng, Brianna; Rajatonirina, Soatiana; et al. (Influenza & Other Respiratory Viruses, 2022)