The perception of risk in contracting and spreading COVID-19 amongst individuals, households and vulnerable groups in England: a longitudinal qualitative study oleh Kerry Hanna, Pam Clarke, Kerry Woolfall, Shaima Hassan, Katharine Abba, Taghreed El Hajj, Elizabeth Deja, Saiqa Ahmed, Neil Joseph, Adele Ring, Gerry Allen, Paula Byrne, Mark Gabbay