proportion of participants with a negative nasopharyngeal sample* by day 7 post diagnosis * defined by a negative RT-PCR on a nasopharyngeal swab of two subsequent study visits. The date of the first negative sample will then be taken as the date of negativity

proportion of participants with a negative nasopharyngeal sample* by day 7 post diagnosis * defined by a negative RT-PCR on a nasopharyngeal swab of two subsequent study visits. The date of the first negative sample will then be taken as the date of negativity