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  • Article
  • Open Access
3 Citations
4,901 Views
14 Pages

Comparative Analysis of Lymphocyte Populations in Post-COVID-19 Condition and COVID-19 Convalescent Individuals

  • Luisa Berger,
  • Johannes Wolf,
  • Sven Kalbitz,
  • Nils Kellner and ,
  • Christoph Lübbert and
  • Stephan Borte
  • + 1 author+ 0 author

Reduced lymphocyte counts in peripheral blood are one of the most common observations in acute phases of viral infections. Although many studies have already examined the impact of immune (dys)regulation during SARS-CoV-2 infection, there are still u...

(This article belongs to the Topic Post COVID-19: Latest Advances, Challenges and Methodologies)
  • Article
  • Open Access
1 Citations
2,421 Views
19 Pages

Long- or post-COVID-19 syndrome, which is also designated by WHO as Post COVID-19 Condition (PCC), is characterized by the persistent symptoms that remain after recovery from SARS-CoV-2 infection. A worldwide consortium of Long COVID-19 Host Genetics...

(This article belongs to the Special Issue Genetic Variations in Human Diseases: 2nd Edition)
  • Article
  • Open Access
1,195 Views
15 Pages

Sex-Stratified Machine Learning for the Prediction of Post-COVID Condition: A Longitudinal Cohort Study

  • Mikhail I. Krivonosov,
  • Ekaterina Pazukhina,
  • Mikhail Rumyantsev,
  • Elina Abdeeva and ,
  • Dina Baimukhambetova,
  • Polina Bobkova,
  • Yasmin El-Taravi,
  • Maria Pikuza,
  • Anastasia Trefilova and
  • Sechenov StopCOVID Research Team
  • + 25 authors+ 20 authors

28 April 2026

Background: Post-COVID-19 condition (PCC) affects many survivors, with evidence of sex-specific differences in prevalence and symptom profiles. However, few prediction studies have examined whether sex-stratified models improve prediction or generali...

(This article belongs to the Special Issue Sequelae of COVID-19: Clinical to Prognostic Follow-Up)
  • Article
  • Open Access
2 Citations
6,834 Views
16 Pages

29 May 2025

Background/Objectives: Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a debilitating condition with not fully understood causes, though evidence points to immune system involvement and possible autoimmunity. ME/CFS could be triggered...

(This article belongs to the Section Clinical Laboratory Medicine)
  • Article
  • Open Access
26 Citations
8,188 Views
10 Pages

Detecting Orthostatic Intolerance in Long COVID in a Clinic Setting

  • Robert Oliver Isaac,
  • Joanna Corrado and
  • Manoj Sivan

Introduction: A likely mechanism of Long COVID (LC) is dysautonomia, manifesting as orthostatic intolerance (OI). In our LC service, all patients underwent a National Aeronautics and Space Administration (NASA) Lean Test (NLT), which can detect OI sy...

(This article belongs to the Section Health Behavior, Chronic Disease and Health Promotion)
  • Brief Report
  • Open Access
2,901 Views
10 Pages

Fasciculations Following COVID-19 Vaccination—A Case Series of Ten Patients

  • Ameli Breuer,
  • Vanessa Raeder,
  • Helena Franziska Pernice,
  • Fabian Boesl and ,
  • Harald Prüss,
  • Heinrich Audebert,
  • Katrin Hahn and
  • Christiana Franke
  • + 3 authors+ 0 author

19 June 2026

Introduction: Vaccination against COVID-19 has been crucial in controlling the pandemic. While side effects are typically mild, rare neurological complications have been reported. This is a case series of ten patients who reported of persistent fasci...

(This article belongs to the Section COVID-19 Vaccines and Vaccination)
  • Systematic Review
  • Open Access
8 Citations
10,072 Views
24 Pages

Background: Since the emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in December 2019, long COVID (LC) has become a significant global health burden. While knowledge about LC is accumulating, studies on its prevention are s...

  • Article
  • Open Access
2 Citations
2,657 Views
22 Pages

Exploring the Impact of COVID-19 on Physical Activity One Month after Infection and Its Potential Determinants: Re-Infections, Pre-Illness Vaccination Profiles/Types, and Beyond

  • Dimitrios I. Bourdas,
  • Panteleimon Bakirtzoglou,
  • Antonios K. Travlos,
  • Vasileios Andrianopoulos and
  • Emmanouil Zacharakis

29 August 2023

This study investigated changes in physical activity (PA) after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection while considering age, PA level, underlying medical conditions (UMCs), vaccination profiles/types, re-infections, d...

(This article belongs to the Section COVID-19 Vaccines and Vaccination)
  • Review
  • Open Access
15 Citations
28,773 Views
18 Pages

Long COVID Is Not a Functional Neurologic Disorder

  • Todd E. Davenport,
  • Svetlana Blitshteyn,
  • Nicola Clague-Baker,
  • David Davies-Payne and ,
  • Glenn J. Treisman and
  • Sarah F. Tyson
  • + 1 author+ 0 author

29 July 2024

Long COVID is a common sequela of SARS-CoV-2 infection. Data from numerous scientific studies indicate that long COVID involves a complex interaction between pathophysiological processes. Long COVID may involve the development of new diagnosable heal...

(This article belongs to the Special Issue New Challenges and Perspectives in Neurology and Autonomic Disorders)
  • Data Descriptor
  • Open Access
1 Citations
3,944 Views
10 Pages

26 January 2024

This dataset aimed to explore associations between pre-SARS-CoV-2 infection exercise and sports-related physical activity (PA) levels and disease severity, along with treatments administered following the most recent SARS-CoV-2 infection. A comprehen...

  • Article
  • Open Access
1 Citations
1,069 Views
14 Pages

Persistence of Symptoms and Long-Term Recovery in Hospitalized COVID-19 Patients: Results from a Five-Year Follow-Up Cohort

  • Ana Roel Conde,
  • Francisco Javier Membrillo de Novales,
  • María Navarro Téllez,
  • Carlos Gutiérrez Ortega and
  • Miriam Estébanez Muñoz

Background/Objectives: This study aimed to determine the prevalence of persistent symptoms and the radiological and laboratory evolution at 6 months and 5 years after discharge in patients hospitalized for SARS-CoV-2 pneumonia during the first wave o...

(This article belongs to the Section Viral Infections)
  • Systematic Review
  • Open Access
1,992 Views
20 Pages

The Burden of Long-COVID-19 Among Pediatric Subjects: A Systematic Review and Meta-Analysis

  • Giovanni Cioni,
  • Giovanna Letizia Calo’,
  • Borana Kerpaci,
  • Anastasia Troia and ,
  • Natalia Gregori,
  • Lamberto Manzoli and
  • Maria Elena Flacco
  • + 2 authors+ 0 author

16 July 2026

Background/Objectives: There is wide variability in the available estimates on the burden of Long-COVID (LC), both among adults and children. Preliminary evidence suggests that this inconsistency may be due, at least in part, to the adoption of uneve...

(This article belongs to the Section Clinical Pediatrics)
  • Article
  • Open Access
14 Citations
3,500 Views
11 Pages

Manifestation of Headache Affecting Quality of Life in Long COVID Patients

  • Kana Fujita,
  • Yuki Otsuka,
  • Naruhiko Sunada,
  • Hiroyuki Honda and ,
  • Kazuki Tokumasu,
  • Yasuhiro Nakano,
  • Yasue Sakurada,
  • Mikako Obika,
  • Hideharu Hagiya and
  • Fumio Otsuka
  • + 5 authors+ 0 author

18 May 2023

Objectives: The present study aimed to elucidate the characteristics of long COVID patients with headaches. Methods: A single-center retrospective observational study was performed for long COVID outpatients who visited our hospital from 12 February...

(This article belongs to the Special Issue Long COVID: Current Approaches and Clinical Challenges in Treatment and Rehabilitation)
  • Article
  • Open Access
5 Citations
3,022 Views
9 Pages

Persisting Gastrointestinal Symptoms in Children with SARS-CoV-2: Temporal Evolution over 18 Months and Possible Role of Lactoferrin

  • Francesco Mariani,
  • Saveena Rainaldi,
  • Giulia Dall’Ara,
  • Cristina De Rose and ,
  • Rosa Morello and
  • Danilo Buonsenso
  • + 1 author+ 0 author

15 January 2024

Background and aim: Persisting gastrointestinal symptoms are reported to be relatively common in children with long COVID; however, their detailed characterization and long-term outcomes have not yet been described. Methods: We performed a retrospect...

  • Article
  • Open Access
5 Citations
4,762 Views
14 Pages

Ebbing Strength, Fading Power: Unveiling the Impact of Persistent Fatigue on Muscle Performance in COVID-19 Survivors

  • Mateusz Kowal,
  • Ewa Morgiel,
  • Sławomir Winiarski,
  • Robert Dymarek and ,
  • Weronika Bajer,
  • Marta Madej,
  • Agata Sebastian,
  • Marcin Madziarski,
  • Nicole Wedel and
  • Małgorzata Paprocka-Borowicz
  • + 8 authors+ 3 authors

15 February 2024

The total number of confirmed cases of COVID-19 caused by SARS-CoV-2 virus infection is over 621 million. Post-COVID-19 syndrome, also known as long COVID or long-haul COVID, refers to a persistent condition where individuals experience symptoms and...

(This article belongs to the Special Issue Applications and Development of Intelligent Sensors for Sports, Health, and Medicine)
  • Article
  • Open Access
8 Citations
2,576 Views
13 Pages

Long-Term Consequences of COVID-19 in Predominantly Immunonaive Patients: A Canadian Prospective Population-Based Study

  • Justine Benoit-Piau,
  • Karine Tremblay,
  • Alain Piché,
  • Frédéric Dallaire and ,
  • Mathieu Bélanger,
  • Marc-André d’Entremont,
  • Jean-Charles Pasquier,
  • Martin Fortin,
  • Catherine Bourque and
  • Paul Farand
  • + 17 authors+ 12 authors

13 September 2023

Background: Lingering symptoms are frequently reported after acute SARS-CoV-2 infection, a condition known as post-COVID-19 condition (PCC). The duration and severity of PCC in immunologically naïve persons remain unclear. Furthermore, the long-...

(This article belongs to the Special Issue Clinical Consequences of COVID-19)
  • Perspective
  • Open Access
5 Citations
5,744 Views
14 Pages

23 August 2023

Post-COVID-19 condition (commonly known as Long COVID) is a heterogeneous clinical condition in which Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) and brain fog stand out among the different clinical symptoms and syndromes. Cerebral me...

(This article belongs to the Section Infectious Diseases)
  • Article
  • Open Access
3 Citations
3,728 Views
16 Pages

A National Survey of Children, Adults, and the Elderly in the Fourth Wave of the COVID-19 Pandemic to Compare Acute and Post-COVID-19 Conditions in Saudi Arabia

  • Aeshah Alsagheir,
  • Samer Amer,
  • Lamya Alzubaidi,
  • Fasial Alenezi and ,
  • Tareef Alamaa and
  • Abdullah Asiri
  • + 1 author+ 0 author

14 March 2023

Background: The fight against COVID-19 appears to extend beyond screening and treatment of acute diseases to its medium- and long-term health consequences. Little is known about the epidemiology and the determinants of developing post-COVID-19 condit...

(This article belongs to the Section Epidemiology & Public Health)
  • Article
  • Open Access
8 Citations
3,036 Views
15 Pages

Immunoglobulin A as a Key Immunological Molecular Signature of Post-COVID-19 Conditions

  • Graziele F. Sousa,
  • Raphael M. Carpes,
  • Carina A. O. Silva,
  • Marcela E. P. Pereira and ,
  • Amanda C. V. F. Silva,
  • Viktoria A. G. S. Coelho,
  • Evenilton P. Costa,
  • Flávia B. Mury,
  • Raquel S. Gestinari and
  • Cintia Monteiro-de-Barros
  • + 10 authors+ 5 authors

13 July 2023

COVID-19 has infected humans worldwide, causing millions of deaths or prolonged symptoms in survivors. The transient or persistent symptoms after SARS-CoV-2 infection have been defined as post-COVID-19 conditions (PCC). We conducted a study of 151 Br...

(This article belongs to the Special Issue COVID-19: Prognosis and Long-Term Sequelae)
  • Article
  • Open Access
3 Citations
2,535 Views
12 Pages

Post-COVID-19 Condition Prediction in Hospitalised Cancer Patients: A Machine Learning-Based Approach

  • Sara Mahvash Mohammadi,
  • Mikhail Rumyantsev,
  • Elina Abdeeva,
  • Dina Baimukhambetova and ,
  • Polina Bobkova,
  • Yasmin El-Taravi,
  • Maria Pikuza,
  • Anastasia Trefilova,
  • Aleksandr Zolotarev and
  • Sechenov StopCOVID Research Team
  • + 24 authors+ 19 authors

18 February 2025

Background: The COVID-19 pandemic has led to widespread long-term complications, known as post-COVID conditions (PCC), particularly affecting vulnerable populations such as cancer patients. This study aims to predict the incidence of PCC in hospitali...

(This article belongs to the Collection The Impact of COVID-19 Infection in Cancer)
  • Case Report
  • Open Access
6 Citations
4,517 Views
19 Pages

Whole-Body Cryostimulation: A Rehabilitation Booster in Post-COVID Patients? A Case Series

  • Paolo Piterà,
  • Michele Gobbi,
  • Jacopo Maria Fontana,
  • Stefania Cattaldo and ,
  • Maurizio Massucci and
  • Paolo Capodaglio
  • + 1 author+ 0 author

10 May 2022

Given the severity and prevalence of post-COVID-19 symptoms in the general population, the identification of boosters for rehabilitation programs appears to be of paramount importance. The purpose of this case series is to provide some preliminary ev...

(This article belongs to the Special Issue COVID-19: Rehabilitation Needs, Therapeutic Development, and Impact on the Health System)
  • Article
  • Open Access
2 Citations
4,702 Views
11 Pages

Course of General Fatigue in Patients with Post-COVID-19 Conditions Who Were Prescribed Hochuekkito: A Single-Center Exploratory Pilot Study

  • Kazuki Tokumasu,
  • Nobuyoshi Matsuki,
  • Yuki Otsuka,
  • Yoko Sakamoto and ,
  • Keigo Ueda,
  • Yui Matsuda,
  • Yasue Sakurada,
  • Hiroyuki Honda,
  • Yasuhiro Nakano and
  • Fumio Otsuka
  • + 8 authors+ 3 authors

19 February 2025

Background: After the start of the COVID-19 pandemic, general fatigue in patients with long COVID and post-COVID-19 conditions (PCC) became a medical issue. Although there is a lack of evidence-based treatments, Kampo medicine (traditional Japanese m...

(This article belongs to the Special Issue Novel Insights into COVID-19-Associated Complications and Sequelae)
  • Systematic Review
  • Open Access
1,066 Views
12 Pages

Echocardiogram Testing in Patients with Post-COVID-19 Condition: A Systematic Review and Meta-Analysis

  • Jana Khawandi,
  • Ali Choaib,
  • Muayad Azzam,
  • Gavin Y. Oudit and ,
  • Khushi Patel,
  • Jamil Nazzal,
  • Aseel Al Khader,
  • Hassan Kawtharany,
  • Mohammad Amin Al Zabibi and
  • Reem A. Mustafa
  • + 20 authors+ 15 authors

15 June 2026

Background: Post-COVID-19 condition (PCC) is a complication following acute COVID-19 infection, which may lead to long-term cardiac abnormalities. This review aimed to assess the prevalence of structural/functional deviations in echocardiography in i...

(This article belongs to the Section Cardiovascular Medicine)
  • Article
  • Open Access
464 Views
13 Pages

Mediterranean Diet, Redox Biomarkers, and Body Composition in ICU Post-COVID-19 Patients

  • Daieni Fernandes,
  • Marina Carvalho Berbigier,
  • Cássia Medino Soares,
  • Poli Mara Spritzer and ,
  • Rafael Aguiar Marschner,
  • Simone Magagnin Wajner,
  • Samanta Catherine Ferreira and
  • Valesca Dall'Alba
  • + 3 authors+ 0 author

24 July 2026

Background: Post-COVID-19 condition (PCC) remains a public health concern due to persistent metabolic and inflammatory alterations, especially among ICU survivors. Oxidative stress is involved in PCC pathophysiology, and the Mediterranean diet may be...

(This article belongs to the Section Clinical Nutrition)
  • Review
  • Open Access
11 Citations
4,975 Views
22 Pages

Pathogenic Connections in Post-COVID Conditions: What Do We Know in the Large Unknown? A Narrative Review

  • Celina Silvia Stafie,
  • Sorina Mihaela Solomon,
  • Irina-Georgeta Sufaru,
  • Maria Manaila and ,
  • Ingrid Ioana Stafie,
  • Gabriela Melinte,
  • Bianca Simionescu and
  • Letitia Leustean
  • + 3 authors+ 0 author

30 July 2022

The coronavirus 2019 (COVID-19) disease has long-term effects, known as post-COVID conditions (PCC) or long-COVID. Post-COVID-19 syndrome is defined by signs and symptoms that occur during or after severe acute respiratory syndrome coronavirus 2 (SAR...

(This article belongs to the Special Issue Post-COVID Syndrome)
  • Article
  • Open Access
385 Views
17 Pages

Screening for Neurocognitive Abilities Post-COVID (SNAP-COVID): Scale Development and Validation

  • Flora Nikolaou,
  • Ioulia Solomou,
  • Maria Loizidou,
  • Panagiotis Papettas and ,
  • Eleni Giorgoudi,
  • Kalia Lofitou and
  • Fofi Constantinidou
  • + 2 authors+ 0 author

12 June 2026

Background and Objectives: The neurocognitive sequelae of COVID-19 have attracted attention as part of post-COVID condition (PCC), yet standardized tools for screening and quantifying PCC-related cognitive impairment remain scarce. The present study...

(This article belongs to the Special Issue The Burden of COVID-19 Pandemic on Mental Health, 2nd Edition)
  • Article
  • Open Access
516 Views
16 Pages

Self-Reported Post-COVID-19 Condition and Associated Factors Using Machine Learning Techniques: A Cross-Sectional Study

  • Alaa A. Alghwiri,
  • Ziad Hawamdeh,
  • Abrar F. AlAbed Alhaq,
  • Dania F. Naser and
  • Alia A. Alghwiri

9 September 2026

Background and Objectives: Post-COVID-19 condition (PCC) is a commonly reported disorder that has gained attention from the World Health Organization (WHO). Several studies have examined factors associated with PCC; however, relatively few have combi...

(This article belongs to the Special Issue Application of Artificial Intelligence in Disease Diagnosis and Treatment)
  • Article
  • Open Access
1 Citations
1,344 Views
15 Pages

Prevalence and Persistence of Post-COVID-19 Condition After Critical Care: 32-Month Follow-Up

  • Alicia Ávila Nieto,
  • Paulo Infante and
  • Francisco Javier Barca Durán

15 January 2026

Background/Objectives: Post-COVID-19 condition (PCC) remains poorly characterized beyond two years, particularly among intensive care unit (ICU) survivors. We aimed to describe the prevalence, persistence, and late consequences of PCC up to 32 months...

(This article belongs to the Collection Coronavirus Disease 2019: Clinical Presentation, Pathogenesis and Treatment)
  • Article
  • Open Access
9 Citations
3,679 Views
22 Pages

Association of Vitamin D Supplementation with Glutathione Peroxidase (GPx) Activity, Interleukine-6 (IL-6) Levels, and Anxiety and Depression Scores in Patients with Post-COVID-19 Condition

  • Iván Ignacio-Mejía,
  • Cindy Bandala,
  • José Francisco González-Zamora,
  • Leslie Chavez-Galan and ,
  • Ivette Buendia-Roldan,
  • Karina Pérez-Torres,
  • María Zobeida Rodríguez-Díaz,
  • Denilson Xipe Pacheco-Tobón,
  • Saray Quintero-Fabián and
  • Noemí Cárdenas-Rodríguez
  • + 13 authors+ 8 authors

Coronavirus disease 2019 (COVID-19) presents with various symptoms, and some patients develop post-COVID-19 condition (PCC). Vitamin D has shown therapeutic potential in COVID-19 and may offer benefits for PCC. The aim of this study was to evaluate t...

(This article belongs to the Special Issue Long-COVID and Its Complications)
  • Article
  • Open Access
774 Views
14 Pages

Machine Learning-Directed Discovery and Statistical Validation of Post-COVID-19 Condition Sequelae Using Military Health System Data

  • Jed Shakarji,
  • Apryl Susi,
  • Zella Berill,
  • Remle Scott and ,
  • Dominic Nathan and
  • Cade M. Nylund
  • + 1 author+ 0 author

30 June 2026

Background: Post-COVID-19 conditions (PCCs) present a significant public health challenge due to a vast array of new or persistent health symptoms across subjects. The complex, multi-systemic nature of PCCs makes these conditions difficult to differe...

(This article belongs to the Section Clinical Medicine and Healthcare)
  • Review
  • Open Access
9 Citations
10,086 Views
23 Pages

Possible Role of Cannabis in the Management of Neuroinflammation in Patients with Post-COVID Condition

  • Noemi Cárdenas-Rodríguez,
  • Iván Ignacio-Mejía,
  • Jose Correa-Basurto,
  • Humberto Carrasco-Vargas and ,
  • Marco Antonio Vargas-Hernández,
  • Exal Manuel Albores-Méndez,
  • Rodolfo David Mayen-Quinto,
  • Reynita De La Paz-Valente and
  • Cindy Bandala
  • + 4 authors+ 0 author

The post-COVID condition (PCC) is a pathology stemming from COVID-19, and studying its pathophysiology, diagnosis, and treatment is crucial. Neuroinflammation causes the most common manifestations of this disease including headaches, fatigue, insomni...

(This article belongs to the Topic Cannabis, Cannabinoids and Its Derivatives)
  • Article
  • Open Access
7 Citations
3,553 Views
11 Pages

Association of Heart Rate Variability with Pulmonary Function Impairment and Symptomatology Post-COVID-19 Hospitalization

  • Estelle A. M. C. Adang,
  • Maud T. A. Strous,
  • Joop P. van den Bergh,
  • Debbie Gach and ,
  • Vivian E. M. van Kampen,
  • Roel E. P. van Zeeland,
  • Dennis G. Barten and
  • Frits H. M. van Osch
  • + 3 authors+ 0 author

23 February 2023

The persistence of symptoms beyond three months after COVID-19 infection, often referred to as post-COVID-19 condition (PCC), is commonly experienced. It is hypothesized that PCC results from autonomic dysfunction with decreased vagal nerve activity,...

(This article belongs to the Section Biomedical Sensors)
  • Article
  • Open Access
2 Citations
4,309 Views
18 Pages

Retinal Microvasculature Changes Linked to Executive Function Impairment after COVID-19

  • Mar Ariza,
  • Barbara Delas,
  • Beatriz Rodriguez,
  • Beatriz De Frutos and ,
  • Neus Cano,
  • Bàrbara Segura,
  • Cristian Barrué,
  • Javier Bejar,
  • Mouafk Asaad and
  • NAUTILUS Project Collaborative Group
  • + 8 authors+ 3 authors

24 September 2024

Background/Objectives: Studies using optical coherence tomography angiography (OCTA) have revealed that individuals recovering from COVID-19 have a reduced retinal vascular density (VD) and larger foveal avascular zones (FAZs) than healthy individual...

(This article belongs to the Special Issue Novel Insights into COVID-19-Associated Complications and Sequelae)
  • Article
  • Open Access
5 Citations
4,005 Views
16 Pages

Differential Fatigue Profile in Patients with Post-COVID Condition, Fibromyalgia, and Multiple Sclerosis

  • Silvia Oliver-Mas,
  • Jordi A. Matias-Guiu,
  • Cristina Delgado-Alonso,
  • Constanza Cuevas and ,
  • José Manuel Alcalá Ramírez del Puerto,
  • Juan Ignacio López-Carbonero,
  • Jorge Matias-Guiu and
  • Maria Diez-Cirarda
  • + 3 authors+ 0 author

2 February 2025

Background/Objectives: Fatigue is a prevalent and debilitating symptom in Post-COVID Condition (PCC), fibromyalgia, and multiple sclerosis (MS). Although these conditions share clinical similarities, the underlying mechanisms of fatigue across these...

(This article belongs to the Special Issue Post-COVID Symptoms and Causes, 3rd Edition)
  • Systematic Review
  • Open Access
16 Citations
3,707 Views
15 Pages

Routine Brain MRI Findings on the Long-Term Effects of COVID-19: A Scoping Review

  • Yuriy Vasilev,
  • Ivan Blokhin,
  • Anna Khoruzhaya,
  • Maria Kodenko and ,
  • Vasiliy Kolyshenkov,
  • Olga Nanova,
  • Yuliya Shumskaya,
  • Olga Omelyanskaya,
  • Anton Vladzymyrskyy and
  • Roman Reshetnikov
  • + 5 authors+ 0 author

Rationale and Objectives: Post-COVID condition (PCC) is associated with long-term neuropsychiatric symptoms. Magnetic resonance imaging (MRI) in PCC examines the brain metabolism, connectivity, and morphometry. Such techniques are not easily availabl...

(This article belongs to the Special Issue Diagnosis and Management in COVID-19 Patient)
  • Article
  • Open Access
2 Citations
1,069 Views
22 Pages

Quality of Life and Functional Status in Individuals with Persistent Post-COVID Symptoms: A Cross-Sectional Comparison by Reported Rehabilitation

  • Michal Macej,
  • Cyril Grus,
  • Jakub Čuj,
  • Lucia Demjanovič Kendrová and ,
  • Wioletta Bronislawa Mikuľaková,
  • Anna Kubincová and
  • Peter Takáč
  • + 2 authors+ 0 author

15 December 2025

Background and Objectives: Post-COVID-19 condition (PCC, long COVID) is associated with persistent symptoms and marked reductions in health-related quality of life (HRQoL), but real-world data on rehabilitation and everyday functioning remain limited...

(This article belongs to the Special Issue Impact on Human Health, Lifestyle and Quality of Care After COVID-19, 2nd Edition)
  • Review
  • Open Access
3 Citations
9,631 Views
25 Pages

Post-COVID Condition and Neuroinflammation: Possible Management with Antioxidants

  • Noemí Cárdenas-Rodríguez,
  • Iván Ignacio-Mejía,
  • César Miguel Mejía-Barradas,
  • Daniel Ortega-Cuellar and ,
  • Felipe Muñoz-González,
  • Marco Antonio Vargas-Hernández,
  • Exsal Manuel Albores-Méndez,
  • Gabriela Ibáñez-Cervantes,
  • Roberto Medina-Santillán and
  • Cindy Bandala
  • + 7 authors+ 2 authors

Post-COVID condition (PCC) is a complex syndrome characterized by the persistence of diverse symptoms—including respiratory, neurological, and psychiatric manifestations—that last for weeks or months after acute Severe Acute Respiratory S...

  • Article
  • Open Access
536 Views
16 Pages

30 May 2026

Background: Cognitive difficulties are common after SARS-CoV-2 infection, yet their neurobiological underpinnings remain uncertain. Cognitive symptoms in post-COVID-19 condition (PCC) are often characterised by attentional and executive dysfunction,...

(This article belongs to the Section Clinical Neurology)
  • Article
  • Open Access
4 Citations
1,980 Views
13 Pages

Longitudinal Fecal Microbiota Profiles in A Cohort of Non-Hospitalized Adolescents and Young Adults with COVID-19: Associations with SARS-CoV-2 Status and Long-Term Fatigue

  • Christine Olbjørn,
  • Milada Hagen,
  • Aina Elisabeth Fossum Moen,
  • Lise Beier Havdal and ,
  • Silke Lauren Sommen,
  • Lise Lund Berven,
  • Espen Thiis-Evensen,
  • Tonje Stiansen-Sonerud,
  • Joel Selvakumar and
  • Vegard Bruun Bratholm Wyller
  • + 5 authors+ 0 author

31 October 2024

Adolescents most often experience mild acute COVID-19, but may still face fatigue and persistent symptoms such as post-COVID-19 condition (PCC) and post-infective fatigue syndrome (PIFS). We explored the fecal microbiota of SARS-CoV-2 positive and ne...

(This article belongs to the Section Viral Pathogens)
  • Article
  • Open Access
9 Citations
2,577 Views
12 Pages

Pulmonary Evaluation in Children with Post-COVID-19 Condition Respiratory Symptoms: A Prospective Cohort Study

  • Einat Shmueli,
  • Ophir Bar-On,
  • Ben Amir,
  • Meir Mei-Zahav and ,
  • Patrick Stafler,
  • Hagit Levine,
  • Guy Steuer,
  • Benjamin Rothschild,
  • Lior Tsviban and
  • Liat Ashkenazi-Hoffnung
  • + 9 authors+ 4 authors

1 November 2023

Background: Studies on post-COVID-19 condition (PCC) in adults have shown deterioration in pulmonary function tests (PFTs), mainly a diffusion limitation. Among the pediatric population, data are scarce. Aim: To characterize PFTs in children with PCC...

(This article belongs to the Special Issue Post-COVID Symptoms in Long-Haulers: Definition, Identification, Mechanisms, and Management-Part II)
  • Article
  • Open Access
17 Citations
9,597 Views
19 Pages

Similar Patterns of Dysautonomia in Myalgic Encephalomyelitis/Chronic Fatigue and Post-COVID-19 Syndromes

  • Varvara A. Ryabkova,
  • Artemiy V. Rubinskiy,
  • Valeriy N. Marchenko,
  • Vasiliy I. Trofimov and
  • Leonid P. Churilov

Background: There is a considerable overlap between the clinical presentation of post-COVID-19 condition (PCC) and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). Many of their common symptoms can be linked to dysregulation of the autono...

  • Article
  • Open Access
1,736 Views
13 Pages

Post-COVID-19 Condition in Swiss Healthcare: Disparities in Access, Delays in Care, and Patient Burden

  • Lara Diem,
  • Ariane Dampfhoffer,
  • Elisabeth Weber,
  • Gregory Fretz and ,
  • Mayssam Nehme and
  • Iris-Katharina Penner
  • + 1 author+ 0 author

Background: Post-COVID-19 Condition (PCC) causes persistent multisystem symptoms, reduced quality of life, and high healthcare needs. Data on patient experiences in Switzerland are scarce. Objective: To assess healthcare access, treatment pathways, w...

(This article belongs to the Section Healthcare Organizations, Systems, and Providers)
  • Article
  • Open Access
1 Citations
2,656 Views
15 Pages

Persistent Low-Grade Inflammation and Post-COVID Condition: Evidence from the ORCHESTRA Cohort

  • Elisa Gentilotti,
  • Carolina Alvarez Garavito,
  • Anna Górska,
  • Roy Gusinow and ,
  • Lorenzo Maria Canziani,
  • Pasquale De Nardo,
  • Alessandro Visentin,
  • Maria Giulia Caponcello,
  • Michela Di Chiara and
  • Evelina Tacconelli
  • + 15 authors+ 10 authors

Background: Persistent low-grade inflammation has been proposed as part of the biological mechanisms underlying post-COVID condition (PCC), which can result in laboratory tests abnormalities. However, the accuracy of routine laboratory tests for the...

(This article belongs to the Special Issue The End of the COVID-19 Pandemic—What Is Currently Known and What Could Have Been Useful Four Years Ago? (2nd Edition))
  • Article
  • Open Access
1,216 Views
14 Pages

Can Personality Traits Affect Sleep Quality in Post-COVID-19 Patients?

  • Anna Carnes-Vendrell,
  • Gerard Piñol-Ripoll,
  • Mar Ariza,
  • Neus Cano and ,
  • Barbara Segura,
  • Carme Junque,
  • Javier Béjar,
  • Cristian Barrue,
  • Nautilus Project Collaborative Group and
  • Maite Garolera
  • + 5 authors+ 0 author

23 April 2025

Objectives: In the present study, we aimed (i) to describe the personality traits of a cohort of post-COVID-19 condition (PCC) patients compared with a healthy control (HC) group, (ii) to evaluate the relationship between sleep quality and personalit...

(This article belongs to the Section Mental Health)
  • Article
  • Open Access
1 Citations
2,296 Views
13 Pages

Is Pulmonary Involvement a Distinct Phenotype of Post-COVID-19?

  • Krystian T. Bartczak,
  • Joanna Miłkowska-Dymanowska,
  • Małgorzata Pietrusińska,
  • Anna Kumor-Kisielewska and ,
  • Adam Stańczyk,
  • Sebastian Majewski,
  • Wojciech J. Piotrowski,
  • Cezary Lipiński,
  • Sebastian Wawrocki and
  • Adam J. Białas
  • + 5 authors+ 0 author

(1) Background: COVID-19 infection often provokes symptoms lasting many months: most commonly fatigue, dyspnea, myalgia and mental distress symptoms. In this study, we searched for clinical features of post-COVID-19 condition (PCC) and differences be...

(This article belongs to the Section Molecular and Translational Medicine)
  • Brief Report
  • Open Access
6 Citations
2,089 Views
10 Pages

Implementing a Pulmonary Telerehabilitation Program for Young Adults with Post-COVID-19 Conditions: A Pilot Study

  • Wilmer Esparza,
  • Alfredo Noboa,
  • Camila Madera,
  • Patricia Acosta-Vargas and ,
  • Gloria Acosta-Vargas,
  • Mayra Carrión-Toro,
  • Marco Santórum,
  • Manuel Ayala-Chauvin and
  • Guillermo Santillán
  • + 4 authors+ 0 author

16 September 2024

Background: Several studies have shown that pulmonary telerehabilitation (PTR) improves respiratory capacity. However, there is little evidence of its effectiveness in youth with post-COVID-19 conditions (PCC). This study analyzed the effects of a PT...

(This article belongs to the Special Issue Primary Health Care: Challenges and Recommendations during a Pandemic)
  • Article
  • Open Access
3 Citations
6,211 Views
15 Pages

Individualized Algorithm-Based Intermittent Hypoxia Improves Quality of Life in Patients Suffering from Long-Term Sequelae After COVID-19 Infection

  • Josephine Schultz Kapel,
  • Rasmus Stokholm,
  • Brian Elmengaard,
  • Zahra Nochi and ,
  • Rikke Jentoft Olsen and
  • Casper Bindzus Foldager
  • + 1 author+ 0 author

26 February 2025

Background/Objectives: Post-COVID-19 condition (PCC), also known as long COVID, has emerged as a recognized syndrome affecting millions of people worldwide, significantly impairing their quality of life. Currently, no effective therapeutic options ar...

(This article belongs to the Section Clinical Rehabilitation)
  • Article
  • Open Access
1 Citations
2,518 Views
13 Pages

Impact of Symptomatic COVID-19 on the Oral Health of Pediatric Patients in Tbilisi City

  • Lia Mania,
  • Ketevan Nanobashvili,
  • Tinatin Manjavidze,
  • Mamuka Benashvili and ,
  • Nino Bzishvili and
  • Ia Astamadze
  • + 1 author+ 0 author

Background/Purpose: Coronavirus disease 2019 (COVID-19) has become the cause of a global health crisis during the pandemic. This research aimed to study the impact of symptomatic COVID-19 on children’s oral health indices and salivary microbiom...

(This article belongs to the Section Pediatric Dentistry & Oral Medicine)
  • Article
  • Open Access
305 Views
16 Pages

Experiences of Inspiratory Muscle Training and Physical Exercise in Adults with Post-COVID-19 Condition and Inspiratory Muscle Weakness: A Qualitative Study

  • Anna Törnberg,
  • Anna Svensson-Raskh,
  • Annie Svensson,
  • Ulrika Holdar and ,
  • Judith Bruchfeld,
  • Elisabeth Rydwik and
  • Malin Nygren-Bonnier
  • + 2 authors+ 0 author

24 September 2026

Background/Objectives: Inspiratory muscle training and physical exercise may benefit individuals with post-COVID-19 condition (PCC), but little is known about how such interventions are experienced. This study aimed to describe experiences of an indi...

(This article belongs to the Special Issue Rehabilitation and Treatment of Post-COVID-19 Condition)
  • Article
  • Open Access
1,371 Views
35 Pages

A Mixed-Methods Evaluation of a Post-COVID-Condition Rehabilitation and Recovery Intervention Delivered in a Football Club Community Trust

  • Steven Rimmer,
  • Adam J. Herbert,
  • Adam L. Kelly,
  • Irfan Khawaja and ,
  • Sam Lee and
  • Lewis A. Gough
  • + 1 author+ 0 author

Aim: Post-COVID condition (PCC) is largely considered the biggest public health emergency in recent times. The role of exercise therapy in PCC is currently unknown, and evaluative studies are currently lacking in this area. This study therefore aimed...

(This article belongs to the Section Exercise and Health-Related Quality of Life)

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