Long COVID Definition, Symptoms, Risk Factors, Epidemiology and Autoimmunity: A Narrative Review

Area of Science:

• Immunology
• Virology
• Neurology

Background:

• The COVID-19 pandemic, caused by SARS-CoV-2, has led to significant global health and economic disruption.
• Long COVID, characterized by persistent symptoms post-acute infection, presents a complex challenge.
• The potential role of autoimmunity in long COVID is an emerging area of investigation.

Purpose of the Study:

• To review the role of SARS-CoV-2-induced autoimmunity in the development of long COVID.
• To describe autoimmune conditions observed in COVID-19 convalescents.
• To highlight the potential link between SARS-CoV-2 infection and autoimmunity.

Main Methods:

• Literature review of studies on COVID-19 convalescents.
• Analysis of reported autoimmune conditions post-SARS-CoV-2 infection.
• Discussion of potential mechanisms linking viral infection to autoimmunity.

Main Results:

• Several autoimmune conditions, including Guillain-Barré syndrome, antiphospholipid syndrome with thrombosis, and Kawasaki disease, have been observed in COVID-19 survivors.
• These findings suggest a potential association between SARS-CoV-2 infection and the development of autoimmune responses.
• The specific prevalence and clinical significance of these autoimmune manifestations require further investigation.

Conclusions:

• SARS-CoV-2 infection may play a role in triggering or exacerbating autoimmune conditions.
• Autoimmunity is a potential contributing factor to the diverse symptoms observed in long COVID.
• Continued research is essential to elucidate the precise mechanisms and clinical impact of SARS-CoV-2-associated autoimmunity.