Related Experiment Video
Updated: Jul 23, 2025

Author Spotlight: Advancements in Multiplex Detection of Respiratory Viruses
Published on: November 10, 2023
Long COVID: what is known and what gaps need to be addressed
Benjamin Krishna1,2, Mark Wills1,2, Nyaradzai Sithole1,2,3
1Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Cambridge CB2 0AW, UK.
Introduction:
Long COVID is a chronic condition that follows after acute COVID-19 and is characterized by a wide range of persistent, cyclic symptoms.
Sources Of Data:
PubMed search for publications featuring 'Long COVID' or 'post-acute sequelae of COVID-19'.
Areas Of Agreement:
Long COVID occurs frequently post-acute COVID-19, with a majority of people experiencing at least one symptom (such as cough, fatigue, myalgia, anosmia and dyspnoea) 4 weeks after infection.
Areas Of Controversy:
The specific symptoms and the minimum duration of symptoms required to be defined as Long COVID.
Growing Points:
There is a consistent reduction in Long COVID incidence amongst vaccinated individuals, although the extent of this effect remains unclear.
Areas Timely For Developing Research:
There is an urgent need to understand the causes of Long COVID, especially extreme fatigue more than 6 months after infection. We must understand who is at risk and whether reinfections similarly risk Long COVID.
Related Concept Videos
Chronic Obstructive Pulmonary Disease-I: Introduction
Stages of Infection
COPD: Pathogenesis and Clinical Features
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
Longitudinal Studies
Classification of Illness
An illness is a response to a disease in which the person's level of functioning is changed compared with a previous level. The general classification of illness includes acute and chronic.
Acute illness is severe...
Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies
Medical History

