What is ‘long Covid’? From shortness of breath to fatigue and memory loss, Hongkongers share mystery tales of post-illness symptoms

• Medical experts are still unclear what causes strange conditions and why only some patients experience them, but urge the setting up of a support system
• The less than 5 per cent of recovered Covid-19 patients in the city reporting such symptoms contrasts with about 30 to 40 per cent in some Western countries