12 Exhaled SARS-CoV-2 viral load kinetics measured by facemask sampling and its association with household transmission – a longitudinal cohort study. (September 2022) - Pan, Daniel; Williams, Caroline; Decker, Jonathan; Fletcher, Eve; Sze, Shirley; Assadi, Sara; Haigh, Richard; Saleem, Baber; Nazareth, Joshua; Garton, Natalie; Pareek, Manish; Barer, Michael