Development of a prognostic model of COVID-19 severity: a population-based cohort study in Iceland.

Background: The severity of SARS-CoV-2 infection varies from asymptomatic state to severe respiratory failure and the clinical course is difficult to predict. The aim of the study was to develop a prognostic model to predict the severity of COVID-19 in unvaccinated adults at the time of diagnosis.

Methods: All SARS-CoV-2-positive adults in Iceland were prospectively enrolled into a telehealth service at diagnosis.

Clinical spectrum of coronavirus disease 2019 in Iceland: population based cohort study.

Objective: To characterise the symptoms of coronavirus disease 2019 (covid-19).

Design: Population based cohort study.

Setting: Iceland.