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WHO publishes a clinical definition of Long-COVID

On 6th October the WHO published a clinical case definition of post COVID-19 condition. The organisation acknowledges that the definition may change as new evidence emerges and that its understanding of the consequences of COVID-19 continues to evolve.

Table 3 of the document summarises the criteria

Post COVID-19 condition occurs in individuals with

  • a history of probable or confirmed SARS CoV-2 infection,
  • usually 3 months from the onset of COVID-19
  • with symptoms and that last for at least 2 months and cannot be explained by an alternative diagnosis.
  • Common symptoms include fatigue, shortness of breath, cognitive dysfunction but also others and generally have an impact on everyday functioning.
  • Symptoms may be new onset following initial recovery from an acute COVID-19 episode or persist from the initial illness.
  • Symptoms may also fluctuate or relapse over time.

WHO