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Defining long COVID: Going back to the start.

Nisreen A Alwan1,2,3, Luke Johnson1

  • 1School of Primary Care, Population Sciences and Medical Education, Faculty of Medicine, University of Southampton, Southampton, UK.

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Summary

Long COVID, a condition where individuals experience prolonged symptoms after COVID-19 infection, requires a standardized definition. This study proposes criteria for initial COVID-19 infection to aid in defining Long COVID.

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Area of Science:

  • Infectious Diseases
  • Public Health
  • Epidemiology

Background:

  • Long COVID describes persistent symptoms lasting weeks or months post-COVID-19.
  • The term "long COVID" originated from patient experiences in Spring 2020.
  • A clear definition of initial infection is needed to standardize Long COVID diagnosis.

Purpose of the Study:

  • To propose a standardized definition for Long COVID.
  • To outline criteria for identifying initial COVID-19 infection.

Main Methods:

  • Literature review on existing Long COVID definitions.
  • Analysis of symptomology and diagnostic criteria for COVID-19.
  • Development of a framework for initial infection identification.

Main Results:

  • Identified key symptoms and diagnostic markers for initial COVID-19.
  • Proposed a set of criteria to define the initial phase of infection.
  • Highlighted the need for consistent diagnostic approaches.

Conclusions:

  • Standardizing the definition of initial COVID-19 infection is crucial for accurate Long COVID diagnosis.
  • A unified approach will improve patient care and research.
  • Further research is needed to validate the proposed definition.