Abstract

Both during and after the acute phase, coronavirus disease 2019 (COVID-19) is associated with a variety of clinical symptoms, many of which may persist even several months after the infection [1, 2]. One of the most common symptoms that is likely to persist is fatigue [1, 3]. Despite intensive research, little is known about the factors that contribute to the development and persistence of fatigue during and after COVID-19 [3]. Since sleep apnoea, particularly more severe forms, are commonly associated with tiredness and exertion, an increased rate of sleep apnoea may explain, at least in part, the commonly mentioned fatigue symptoms.