Covid-19 Articles

Coronaviruses have reached at Pre-elimination Stage with Nine Amino Acid Spike Deletions and Forty-nine Nucleotide 3’-UTR Deletions

Published on: 17th September, 2024

Background: Human 30kb coronaviruses entered through the ACE-2 receptors causing fibrosis of the lungs and causing six million deaths worldwide. Here, we have investigated the mutations, deletions and insertions of the recent JN.1 omicron coronaviruses to demonstrate that coronaviruses have reached the pre-elimination stage. Methods: We multi-aligned the genomes of recent JN.1 variants using NCBI Virus Portal and CLUSTAL-Omega. The spike proteins are multi-aligned using MultAlin software and CLUSTAL-Omega.Results: The 17MPLF spike insertion was confirmed to compensate 24LPP, 31S, 69HV, 145Y, 211N and 483V deletions. The 49nt deletions in the 3’-UTR were found in 4997 JN.1 sequences although 26nt deletion was initiated previously in JN.1 as well as BA.5, BF.7, BQ.1 and XBB.1.5 omicron viruses. We first compare 3-D structures of spike proteins with or without 17MPLF four amino acids insertion and nine amino acids deletions using SWISS MODELLING. The JN.1 viruses caused a more stable trimeric spike involving Thr342, Lys436, Lys440, His441, Ser442, Gly443, Tyr445, Lys479, Ser489, Tyr490, Arg493, Pro494, Thr495, and Gln501 amino acids to interact with ACE-2 receptors. The FLiRT spike mutations were found in most KP.2 variants and other changes occurred at the NH2 terminus.Conclusion: We claimed that pre-death changes were initiated in JN.1 COVID-19 lineages and computer simulation showed that the Howard spike with 17MPLF spike insertion appeared more stable than the Oppentrons-spike without 17MPLF insertion. Surely, conflicts of COVID-19 spike sequences must be resolved.
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Association Between Electrocardiographic Abnormalities and In-Hospital Adverse Outcome in COVID-19 Patients

Published on: 10th October, 2024

Background: SARS-CoV-2 is increasingly recognized for its cardiovascular complications. To address the knowledge gap in our region, this study investigated the relationship between electrocardiographic (ECG) features and in-hospital mortality among COVID-19 patients.Methods: A prospective cohort study was conducted involving 140 RT-PCR-confirmed COVID-19 patients at Dhaka Medical College Hospital from August 2021 to July 2022. Patients were divided into two groups based on ECG findings: normal (Group A) and abnormal (Group B). Clinical data and ECG parameters were analyzed using SPSS 24.0.Results: Patients with abnormal ECGs were older, more likely male, and presented with higher rates of dyspnea and palpitations. They were also at increased risk of severe COVID-19 and had longer hospital stays. In-hospital mortality was significantly higher in Group B (21.4% vs.4.3%). ST-T changes and atrial fibrillation were associated with increased mortality. Independent predictors of in-hospital mortality included ECG abnormalities and admission SpO₂ < 90%.Conclusion: ECG abnormalities are significantly associated with adverse outcomes in COVID-19 patients. Further large-scale studies are warranted to strengthen these findings.
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Is Acupuncture Efficient for Treating Long COVID? Case Reports

Published on: 22nd October, 2024

Long COVID can be defined as a set of symptoms appearing more than 28 days after a documented acute COVID-19. Among them, extreme fatigue and troubles of moods are the most common. To verify that acupuncture can efficiently alleviate long COVID, a chronic disease partly escaping to other treatments, especially fatigue and troubles of mood. To collect data pertaining to the patients included in the study as described in the STROBE guideline. To diagnose the clinical conditions of the patients using the Nan jing in order to choose the meridian and the points to be toned or dispersed depending on the observation of tongue and pulse. Acupuncture can greatly improve the troubles of patients suffering from long COVID after a reduced number of sessions (1 to 4).
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Understanding Burnout Rates for Clinicians and Physical Symptoms of Allostatic Load

Published on: 7th January, 2025

Burnout among clinicians is a pressing concern worldwide, manifesting as emotional exhaustion, depersonalization, and reduced professional efficacy. This article explores the intersection of burnout and allostatic load, the physiological burden resulting from chronic stress, to elucidate the consequences for healthcare providers. Burnout impacts clinicians’ mental and physical health, leading to compromised patient care, reduced job satisfaction, and increased attrition rates. A comparative analysis of recent scholarly works reveals converging evidence on systemic contributors such as excessive workloads, inadequate support systems, and organizational inefficiencies, further compounded by individual vulnerabilities like lack of resilience. These challenges have been exacerbated by the COVID-19 pandemic, which has significantly increased stress levels among healthcare professionals globally. This article synthesizes insights from studies conducted between 2020 and 2024, emphasizing the need for holistic approaches to mitigate burnout. It highlights the physiological underpinnings of allostatic load, including chronic dysregulation of stress-response systems that predispose clinicians to adverse health outcomes like cardiovascular diseases, immune dysfunction, and mental health disorders. To address these issues, the article proposes a multidimensional strategy encompassing organizational reforms, evidence-based interventions, and policy advocacy. Recommendations include reducing administrative burdens, fostering supportive work environments, and integrating wellness programs targeting both systemic and individual stressors. Limitations and directions for future research emphasize the importance of inclusive, longitudinal studies focusing on diverse populations to develop tailored solutions. This comprehensive approach aims to enhance clinician well-being and improve healthcare outcomes globally.
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Dengue Epidemic during COVID-19 Pandemic: Clinical and Molecular Characterization – A Study from Western Rajasthan

Published on: 1st April, 2025

The concurrent emergence of dengue fever and the COVID-19 pandemic posed significant challenges to India’s healthcare system, particularly in Western Rajasthan, a region characterized by its arid climate and unique socio-demographic conditions. This study aimed to investigate the clinical and molecular characteristics of dengue during the COVID-19 pandemic, focusing on trends, diagnostic challenges, and serotype distribution. Conducted at Dr. S.N. Medical College, Jodhpur, in 2021, the study included 550 dengue-positive patients confirmed via rapid diagnostic tests and further analyzed using Dengue NS1 antigen and IgM antibody ELISA. Molecular characterization was performed using RT-PCR for serotyping.The results revealed a male predominance (72.36%) and a higher incidence in the 21–30-year age group (39.09%). Urban areas accounted for 67.73% of cases, with significant NS1 and IgM positivity (p = 0.042 and p = 0.004, respectively). Most cases (86.91%) were managed outpatient, though IgM positivity was significantly higher among hospitalized patients (19.19%, p < 0.001), indicating severe or prolonged infections. Platelet counts were above 100,000/mm³ in 86.91% of cases, with only 0.37% showing critically low counts (< 20,000/mm³). Seasonal analysis showed a peak in October (n = 325), correlating with post-monsoon vector breeding. Serotyping identified DENV2 as the dominant strain (97.42%), associated with severe dengue manifestations, including Dengue Haemorrhagic Fever (DHF).The study highlights the dual burden of dengue and COVID-19, emphasizing the need for enhanced vector control, improved diagnostic strategies and public health interventions during overlapping outbreaks. The predominance of DENV2 underscores the importance of serotype-specific surveillance and preparedness to mitigate future dengue epidemics in the region.
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