Epidemiological investigation of the first 5685 cases of SARS-CoV-2 infection in Qatar, 28 February-18 April 2020.
Hanan M Al KuwariHanan F Abdul RahimLaith Jamal Abu-RaddadAbdul-Badi Abou-SamraZaina Al KanaaniAbdullatif Al KhalEinas Al KuwariSalih Al MarriMuna Al MasalmaniHamad E Al RomaihiMohamed H Al ThaniPeter V CoyleAli N LatifRobert OwenRoberto BertolliniAdeel Ajwad ButtPublished in: BMJ open (2020)
COVID-19 infections in Qatar started in two distinct clusters, but then became more widespread in the population through community transmission. Infections were mostly asymptomatic or with minimal symptoms and associated with very low mortality. Severe/critical illness was associated with presence of hypertension or diabetes but not with increasing age.