The COVID-19 continuum of illness

On Oct 6, 2021, WHO recognised the need to codify the post-COVID-19 condition and formalised the cataloguing of diverse symptoms and multisystem sequelae after COVID-19. Symptoms of post-COVID-19 condition include fatigue, shortness of breath, cognitive dysfunction, and symptoms interfering with daily functioning. These symptoms can remit or relapse over time, but persist for at least 2 months and occur 3 months after the initial COVID-19 illness.1