COVID-19 Academic Resources Center
 

MDPI Comment on the COVID-19 Virus

Since 1996, MDPI has been committed to supporting the research community by providing the latest research freely available and making relevant and useful research available as quickly as possible. The world is current experiencing a pandemic of COVID-19, and researchers are working extremely hard to understand it and find a cure.

The values MDPI holds strongly are particularly important at the moment, and we will continue to publish relevant, peer-reviewed research as quickly as possible in open access format. This means that it will immediately be available for researchers, health professionals, and the general public to read, distribute, and reuse. We believe that scientific advancements will be crucial to overcoming this pandemic, and will do everything we can to support researchers working looking for solutions.

This page contains a variety of information related to COVID-19 available from MDPI, including journal articles, special issues, and preprints, among others.

Recent Publications

7 pages, 728 KiB  
Brief Report
Rise in Serum 25-Hydroxyvitamin D Levels during the COVID-19 Pandemic
by Witt Durden, Shady Ezaldin, Jessica Amos, Suzanne Kemper and James Campbell
Nutrients 2024, 16(15), 2449; https://doi.org/10.3390/nu16152449 (registering DOI) - 27 Jul 2024
Abstract
With the emergence of the COVID-19 pandemic, the absence of established evidence-based treatment protocols led healthcare professionals and the public to explore experimental treatments, including high doses of vitamin D supplements. This study aimed to assess changes in serum 25-hydroxyvitamin D levels during [...] Read more.
With the emergence of the COVID-19 pandemic, the absence of established evidence-based treatment protocols led healthcare professionals and the public to explore experimental treatments, including high doses of vitamin D supplements. This study aimed to assess changes in serum 25-hydroxyvitamin D levels during the pandemic, employing a retrospective cohort analysis of data from Charleston Area Medical Center (CAMC). The study analyzed serum 25-hydroxyvitamin D levels in a cohort of 35,556 patients treated at CAMC in 2019, a representative pre-pandemic period, to 2021, a representative pandemic period. Our findings revealed a significant increase in mean serum 25-hydroxyvitamin D levels as compared with 2019 (37 ± 21 vs. 31 ± 15 ng/mL, p ≤ 0.001). Additionally, in 2021, there were significantly more patients exhibiting serum levels in the highest quintiles, specifically >100 ng/mL (1.6% vs. 0.2%), 75–100 ng/mL (4.6% vs. 1.2%), and 50–75 ng/mL (16.0% vs. 8.4%), p ≤ 0.001. This upsurge suggests increased intake of vitamin D supplements, potentially fueled by widespread discussions that were taking place largely on the internet regarding the efficacy of vitamin D against COVID-19. Our findings underscore the critical need for evidence-based public health messaging, especially during health crises, to prevent unnecessary health risks and ensure patient safety. Full article
(This article belongs to the Section Micronutrients and Human Health)
Show Figures

Figure 1

16 pages, 1139 KiB  
Article
A Comparative Study on the Pain Threshold Experienced by Fibromyalgia Patients Following Acute SARS-CoV-2 Infection
by Daniela Matei, Rodica Traistaru, Anca Maria Amzolini, Laura Simona Ianosi, Carmen Daniela Neagoe, Adina Mitrea, Diana Clenciu and Taina Elena Avramescu
Life 2024, 14(8), 942; https://doi.org/10.3390/life14080942 (registering DOI) - 27 Jul 2024
Abstract
Significant gaps remain in the understanding of the etiology and pathogenesis of fibromyalgia (FM), and the COVID-19 pandemic has introduced even more unknowns. Social factors specific to that period, the viral infection itself, and/or vaccination are additional elements that can complicate the progression [...] Read more.
Significant gaps remain in the understanding of the etiology and pathogenesis of fibromyalgia (FM), and the COVID-19 pandemic has introduced even more unknowns. Social factors specific to that period, the viral infection itself, and/or vaccination are additional elements that can complicate the progression of the disease or the response to treatment. Aim: The primary hypothesis to be evaluated in this study is that an acute COVID-19 infection, even when considered recovered, may induce changes in the response to non-pharmacological treatment in FM patients, particularly concerning pain. Results: We included 128 patients diagnosed with FM before the pandemic began. The patients were divided based on their history of acute SARS-CoV-2 infection and COVID-19 vaccination status. All patients followed the same rehabilitation program (cognitive therapy, kinesitherapy). Perceived pain: The non-COVID-19 patient groups showed a statistically significant reduction in pain at the final evaluation compared to patients with a history of acute SARS-CoV-2 infection (p < 0.001). Algometric evaluation: Patients without COVID-19 infection and that were vaccinated exhibited the best improvement in pain threshold, both across evaluation times (p < 0.001) and compared to any of the other three groups studied (p < 0.001). Using the WHYMPI questionnaire, the same group of patients (those not having experienced acute COVID-19 and who were vaccinated) was the only group with a statistically significant improvement in pain severity (p = 0.009). In conclusion, to control and improve FM pain symptoms, in addition to appropriate medication, we propose paying additional attention to the history of acute SARS-CoV-2 infection and the COVID-19 vaccination status. Full article
(This article belongs to the Special Issue Infection, Inflammation and Rheumatology)
Show Figures

Figure 1

13 pages, 336 KiB  
Article
Roma Women’s Role in the Health Preservation of Their Communities during the COVID-19 Pandemic
by Paula Abella, Adriana Aubert, María Virginia Matulič and Ariadna Munté-Pascual
Int. J. Environ. Res. Public Health 2024, 21(8), 985; https://doi.org/10.3390/ijerph21080985 (registering DOI) - 27 Jul 2024
Abstract
The scientific literature has evidenced the stereotypes that affect the Roma people, which are detrimental to their access to the health systems in various countries. With the COVID-19 pandemic, this situation has been aggravated by falsely blaming, on many occasions, the Roma people [...] Read more.
The scientific literature has evidenced the stereotypes that affect the Roma people, which are detrimental to their access to the health systems in various countries. With the COVID-19 pandemic, this situation has been aggravated by falsely blaming, on many occasions, the Roma people as spreaders of the virus for supposedly not complying with the norms established by the health authorities. However, it has not been explored in depth what actions have been carried out by the Roma people during the pandemic to cope with this aspect. The aim of this article is to learn about the leadership of Roma women in relation to maintaining the health of their community during the pandemic. The research has been conducted through focus groups and life stories with a total of 47 Roma women and 24 Roma men participants, as well as interviews with 40 professionals from education, social services, health services, and civic organizations. The results show how the reality of the studied contexts was different to those stereotypes, that the Roma women in the contexts studied have led actions that preserved the health of their communities, that the established measures were strictly followed, breaking with the extended stereotype about the Roma people. Full article
15 pages, 1564 KiB  
Article
Emergence of Recombinant SARS-CoV-2 Variants in California from 2020 to 2022
by Rahil Ryder, Emily Smith, Deva Borthwick, Jesse Elder, Mayuri Panditrao, Christina Morales and Debra A. Wadford
Viruses 2024, 16(8), 1209; https://doi.org/10.3390/v16081209 (registering DOI) - 27 Jul 2024
Abstract
The detection, characterization, and monitoring of SARS-CoV-2 recombinant variants constitute a challenge for public health authorities worldwide. Recombinant variants, composed of two or more SARS-CoV-2 lineages, often have unknown impacts on transmission, immune escape, and virulence in the early stages of emergence. We [...] Read more.
The detection, characterization, and monitoring of SARS-CoV-2 recombinant variants constitute a challenge for public health authorities worldwide. Recombinant variants, composed of two or more SARS-CoV-2 lineages, often have unknown impacts on transmission, immune escape, and virulence in the early stages of emergence. We examined 4213 SARS-CoV-2 recombinant SARS-CoV-2 genomes collected between 2020 and 2022 in California to describe regional and statewide trends in prevalence. Many of these recombinant genomes, such as those belonging to the XZ lineage or novel recombinant lineages, likely originated within the state of California. We discuss the challenges and limitations surrounding Pango lineage assignments, the use of publicly available sequence data, and adequate sample sizes for epidemiologic analyses. Although these challenges will continue as SARS-CoV-2 sequencing volumes decrease globally, this study enhances our understanding of SARS-CoV-2 recombinant genomes to date while providing a foundation for future insights into emerging recombinant lineages. Full article
(This article belongs to the Special Issue Emerging Concepts in SARS-CoV-2 Biology and Pathology 2.0)
16 pages, 6566 KiB  
Article
Hypomyelination Leukodystrophy 16 (HLD16)-Associated Mutation p.Asp252Asn of TMEM106B Blunts Cell Morphological Differentiation
by Sui Sawaguchi, Miki Ishida, Yuki Miyamoto and Junji Yamauchi
Curr. Issues Mol. Biol. 2024, 46(8), 8088-8103; https://doi.org/10.3390/cimb46080478 (registering DOI) - 27 Jul 2024
Abstract
Transmembrane protein 106B (TMEM106B), which is a type II transmembrane protein, is believed to be involved in intracellular dynamics and morphogenesis in the lysosome. TMEM106B is known to be a risk factor for frontotemporal lobar degeneration and has been recently identified as the [...] Read more.
Transmembrane protein 106B (TMEM106B), which is a type II transmembrane protein, is believed to be involved in intracellular dynamics and morphogenesis in the lysosome. TMEM106B is known to be a risk factor for frontotemporal lobar degeneration and has been recently identified as the receptor needed for the entry of SARS-CoV-2, independently of angiotensin-converting enzyme 2 (ACE2). A missense mutation, p.Asp252Asn, of TMEM106B is associated with hypomyelinating leukodystrophy 16 (HLD16), which is an oligodendroglial cell-related white matter disorder causing thin myelin sheaths or myelin deficiency in the central nervous system (CNS). However, it remains to be elucidated how the mutated TMEM106B affects oligodendroglial cells. Here, we show that the TMEM106B mutant protein fails to exhibit lysosome distribution in the FBD-102b cell line, an oligodendroglial precursor cell line undergoing differentiation. In contrast, wild-type TMEM106B was indeed localized in the lysosome. Cells harboring wild-type TMEM106B differentiated into ones with widespread membranes, whereas cells harboring mutated TMEM106B failed to differentiate. It is of note that the output of signaling through the lysosome-resident mechanistic target of rapamycin (mTOR) was greatly decreased in cells harboring mutated TMEM106B. Furthermore, treatment with hesperetin, a citrus flavonoid known as an activator of mTOR signaling, restored the molecular and cellular phenotypes induced by the TMEM106B mutant protein. These findings suggest the potential pathological mechanisms underlying HLD16 and their amelioration. Full article
(This article belongs to the Special Issue Molecules at Play in Neurological Diseases 2024)
16 pages, 1221 KiB  
Article
Identity Disturbance in the Digital Era during the COVID-19 Pandemic: The Adverse Effects of Social Media and Job Stress
by Bojan Obrenovic, Danijela Godinic, Gang Du, Akmal Khudaykulov and Hui Gan
Behav. Sci. 2024, 14(8), 648; https://doi.org/10.3390/bs14080648 (registering DOI) - 27 Jul 2024
Abstract
The empirical study aimed to explore the relationships among social media exposure, job stress, anxiety, and identity disturbance in a nonclinical setting in the COVID-19 pandemic context. An online questionnaire was administered to 282 participants in the United States of America (USA) during [...] Read more.
The empirical study aimed to explore the relationships among social media exposure, job stress, anxiety, and identity disturbance in a nonclinical setting in the COVID-19 pandemic context. An online questionnaire was administered to 282 participants in the United States of America (USA) during the COVID-19 pandemic. The study utilized a two-step Structural Equation Modeling (SEM) approach consisting of both measurement model and structural model testing. Relationships between the model variables of social media exposure, identity disturbance, anxiety, and job stress were analyzed using standardized beta coefficients, standard errors, t-values, and p-values. The results indicate that both social media exposure and job stress are associated with increased anxiety levels, which, in turn, influence identity disturbance. Moreover, there is a moderating effect of job stress on the relationship between social media exposure and anxiety, as well as the mediating effect of anxiety on the relationship between social media exposure and identity disturbance. The findings are valuable for organizations and can be used to develop programs aimed at mitigating the adverse effects of social media exposure on mental health. Prioritizing employee mental health through awareness and support initiatives is paramount, especially for those facing high stress and extensive social media use. Full article
(This article belongs to the Special Issue The Impacts of COVID-19 on Mental Health and Well-Being)
Show Figures

Figure 1

Sequencing Techniques and Genomics Technologies to Help with Diagnostics and Virus Characterization – Focus on COVID 19
edited by , Hugh E. Olsen, and
submission deadline 15 Apr 2021 | 10 articles | Viewed by 57695
Keywords: Genomics technologies; Sequencing techniques; Metagenomics; Virus sequencing; Genetic diagnostics; qPCR; Nanopore sequencing; Single-molecule real-time (SMRT) sequencing; Next-generation sequencing (NGS); Third-generation sequencing; Virus characterization; Long-read sequencing; Comparative genomics; Functional genomics; Diagnostic tests; Infectious diseases; Pandemic; SARS-CoV-2; COVID-19; Coronavirus; Genomic epidemiology; Population stratification; Genetic susceptibility; Host interactions
(This special issue belongs to the Section Technologies and Resources for Genetics)
Environmental Injustice and COVID-19: Challenges and Recommendations
edited by
submission deadline 30 Jul 2024 | 1 articles | Viewed by 3125 | Submission Open
Keywords: social determinants of health; racism; noise pollution; soil pollution; indoor air quality; secondhand smoke; air pollution; water pollution; pharmaceutical waste; medical waste; electronic waste; health equity; COVID-19; health disparities; marginalized; minority
(This special issue belongs to the Section Environmental Health)
Allergic Reactions to Currently Available COVID-19 Vaccination
edited by Lennart J. Nilsson
submission deadline 31 Jul 2024 | Viewed by 214 | Submission Open
(This special issue belongs to the Section COVID-19 Vaccines and Vaccination)
The Chemical Immobilization and Inactivation of SARS-CoV-2
edited by
submission deadline 31 Jul 2024 | Viewed by 666 | Submission Open
Keywords: antiviral agents; biocidal nanoparticles; mechanism of immobilization; antiviral activity; bioactive polymers; molecular docking; applications
(This special issue belongs to the Section Medicinal Chemistry)
Understanding Immune Responses to COVID-19 Vaccines
edited by
submission deadline 31 Jul 2024 | 2 articles | Viewed by 2673 | Submission Open
Keywords: variants and the short duration of protective immunity; immune responses; COVID-19 vaccines
(This special issue belongs to the Section COVID-19 Vaccines and Vaccination)
The Evolution of SARS-CoV-2: Molecular Properties, Virulence and Epidemiology
edited by
submission deadline 31 Jul 2024 | 3 articles | Viewed by 4031 | Submission Open
Keywords: SARS-CoV-2; molecular epidemiology; epidemiology infection; transmission; monitoring; diagnosis
(This special issue belongs to the Section Public Health Microbiology)

State-of-the-Art Webinars on COVID-19


WEBINAR 1: How to Avoid a New Lockdown?

The first webinar in the series, held on 17 April 2020, saw both Prof. Dr. Antoine Flahault, Director of the Institute of Global Health, University of Geneva, Switzerland, and Prof. Dr. Evelyne Bischof, Associate Professor, Shanghai University of Medicine and Health Sciences, Shanghai, China and Research physician, University Hospital of Basel, Basel, Switzerland speak on this topic.

The recording can be found here.

WEBINAR 2: Coronaviruses: History, Replication, Innate Immune Antagonism

The second webinar in the series, entitled “Coronaviruses: history, replication, innate immune antagonism”, saw Prof. Dr. Susan R. Weiss, Professor of Microbiology, Perelman School of Medicine, University of Pennsylvania speak on this topic.

The recording can be found here.

WEBINAR 3: Could the COVID-19 Crisis be the Opportunity to Make Cities Carbon Neutral, Liveable and Healthy

The third webinar in this series was presented by Prof. Dr. Mark Nieuwenhuijsen, a world leading expert in environmental exposure assessment, epidemiology, and health risk/impact assessment with a strong focus and interest on healthy urban living. 

The recording can be found here

WEBINAR 4: COVID-19 - Global Supply Chains and the SDGs

For the fourth webinar of this series, Prof. Dr. Max Bergman, Dr. Dorothea Schostok and Prof. Dr. Patrick Paul Walsh gave a presentation on Global Supply Chains and the SDGs. 

The recording can be found here.

WEBINAR 5: The New Role of Family Physicians in Times of COVID-19

The fifth webinar of the COVID-19 Series saw Prof. Dr. Christos Lionis discuss the new role of family physicians that emerged during the COVID-19 pandemic.

The recording can be found here.

WEBINAR 6: Survey on Symptoms/Signs, Protective Measures, Level of Awareness and Perception Regarding COVID-19 Outbreak among Dentists

In the sixth webinar of this series, Prof. Dr. Guglielmo Campus and Prof. Dr. Maria Grazia present and discuss the risk and the preventions that can and should be taken by dentists during this pandemic.

The recording can be found here.

WEBINAR 7: Living with COVID-19: An Early Intervention Therapeutic Strategy to Control the Pandemic

The seventh webinar of the COVID-19 series, Dr. Hamid Merchant discussed the different therapeutic strategies that can be adopted in the early stages of the infection.

The recording can be found here.

WEBINAR 8: Impact of COVID-19 on Routine Immunization, Reproduction and Pregnancy Outcome

For the eighth COVID-19 webinar, Prof. Dr. Jon Øyvind Odland discussed the effect that COVID-19 seems to have on pregnant women; whereas Prof. Dr. Giovanni Gabutti discussed the role of routine immunization as a way of fighting COVID-19.

The recording can be found here.

Open Platforms for Research Dissemination

Follow Us

Back to TopTop