Overview of national and international COVID-19 cohorts

• 1078 • Acute kidney injury in COVID-19 infected patients: incidence and impact prognosis > M. Mabrouk BAHLOUL (Sfax) • 1227 • Friend or foe? Evaluation of the effect of BCG vaccine and latent tuberculosis infection on patients diagnosed with COVID-19 > M. Meltem TASBAKAN (Izmir) • 1671 • Presentation and outcome of COVID-19 in 101 children with cancer or following haematopoietic stem cell transplant > G. Gabrielle M HAEUSLER (Melbourne) • 240 • Clinical and epidemiological factors associated with COVID-19 severity in children from a single hospital in Buenos Aires, Argentina > M. Martin BRIZUELA (Ciudad De Buenos Aires) • 3114 • Baseline characteristics and case fatality rate of hospitalised COVID-19 patients: an observational, prospective and multi-centre study in 11 French hospitals > J. Juliette DESSEMON (Lyon) • 3484 • Differences in clinical behaviour and prognosis of SARS-CoV-2 infection between two periods in Albacete, Spain > C. Cristina ROSA FELIPE (Albacete) • 3891 • Phenotypes assignment of COVID-19 patients from first 2 waves at a single hospital in Spain in comparison with the reference FEN-COVID cohort > N. Natalia MALDONADO (Seville) • 4454 • COVID-19 in Venezuela: epidemiological and clinical characteristics of first cases > D. David A. FORERO-PEÑA (Caracas) • 889 • Chilblains is associated with lower hospitalisation among outpatients with COVID-19: a large cohort study > H. Hélène MASCITTI (Garches)