For some people with COVID-19, even those who are only mildly affected at first, the ensuing weeks and months of “recovery” bring a surprise and a betrayal: they do not return to full health. Although nucleic acid tests no longer detect the virus, people still suffer from ongoing symptoms. They call themselves “long haulers,” and the condition is being called “long COVID.”
A study of Covid-19 long haulers may well also shed light on ME/CFS and post-infectious fatigue syndromes following infections other than COVID-19. One major obstacle to understanding the long-term effects of Covid-19 is the lack of available data. The scientific community – public and private – needs to gather as much data as possible while we are still in the early phases of this Covid-19 era.