Virus Diseases Commons^™

Evolution And Epidemiology Of Channel Catfish Virus (Ccv), Arun Venugopalan

Theses and Dissertations

Channel catfish virus disease (CCVD) is the principal viral disease in the United States catfish industry. The CCVD is caused by channel catfish virus (CCV), with mortality reaching up to 100% in fingerlings. CCV is assigned taxonomically to the family Alloherpesviridae, genus Ictalurivirus, species Ictalurid herpesvirus 1 (IcHV-1). To date, virulence, immunogenicity, and genome plasticity of the CCV field isolates have not been investigated. Three genotypes of CCV (IcHV-1A, IcHV-1B, and BCAHV) were identified using restriction fragment length polymorphism (RFLP) analysis. Virulence assessment of three representative isolates of RFLP groups suggests that IcHV-1B (pooled survival [mean ± SE]: 58.3% ± …

Home Oxygen And Monitoring For Covid-19 Patients: A Multidisciplinary Team Approach, Mahta Salehi, Shehrose Chaudry, Rebecca B. Newman, Josette Hartnett, Suzanne J. Rose, Forugh Homayounrooz

Journal of Community Hospital Internal Medicine Perspectives

Introduction: During the initial COVID-19 pandemic peak, Stamford Hospital implemented a home oxygen program (HOP) to create a comprehensive, multi-disciplinary outpatient initiative without sacrificing a safe discharge. Primary care physicians monitored program participants, whose only indication for remaining admitted was an oxygen requirement. We retrospectively examined participant co-morbidities and outcomes, including death and readmission rates to evaluate HOP safety.

Methods: A retrospective analysis of program participants discharged between April 2020-Janurary 2021 was performed. Variables included demographics, oxygen requirement, days enrolled in the HOP, and major comorbidities such as cardiovascular disease (CVD), diabetes (DM), hypertension (HTN), obesity, chronic kidney disease, malignancies …

Balancing Functional Tradeoffs Between Protein Stability And Ace2 Binding In The Sars-Cov-2 Omicron Ba.2, Ba.2.75 And Xbb Lineages: Dynamics-Based Network Models Reveal Epistatic Effects Modulating Compensatory Dynamic And Energetic Changes, Gennady M. Verkhivker, Mohammed Alshahrani, Grace Gupta

Mathematics, Physics, and Computer Science Faculty Articles and Research

Evolutionary and functional studies suggested that the emergence of the Omicron variants can be determined by multiple fitness trade-offs including the immune escape, binding affinity for ACE2, conformational plasticity, protein stability and allosteric modulation. In this study, we systematically characterize conformational dynamics, structural stability and binding affinities of the SARS-CoV-2 Spike Omicron complexes with the host receptor ACE2 for BA.2, BA.2.75, XBB.1 and XBB.1.5 variants. We combined multiscale molecular simulations and dynamic analysis of allosteric interactions together with the ensemble-based mutational scanning of the protein residues and network modeling of epistatic interactions. This multifaceted computational study characterized molecular mechanisms and …

Center Based Cardiac Rehabilitation Outcomes Associated With Covid-19 Pandemic: A Retrospective Comparative Cohort Study, Haley Williams, Kayla Woodworth

Doctor of Nursing Practice Projects: College of Nursing

Background: Traditional cardiac rehabilitation (CR) is a multidisciplinary, multifaceted program for cardiac patients. Throughout the Covid-19 pandemic, health care, including center-based CR (CBCR) programs, were closed to in-person sessions. Even with the return to CBCR participation, patient outcomes may have been affected by this disruption in care. The goal of this study was to determine if CR participation outcomes differed before and after CBCR program closure due to Covid-19.

Methods: A retrospective comparative cohort design was used to examine CR participant outcome data before and after the Covid-19 pandemic. Convenience sampling of CR participants at a large, urban …

The Impact Of Covid-19 On Post-Recovery Memory, Chelsea Mcnamara, Alison Mancuso

Rowan-Virtua Research Day

The SARS-CoV-2 virus, responsible for the covid-19 pandemic, has had profound effects on countries worldwide. As the pandemic progressed, clinical and patient data continued to mount. A subset of symptoms named “Long Covid Syndrome” persisted in patients after recovering from infection. One commonly reported but understudied symptom was a deficit in memory function. Although commonly reported, prevalence of ‘brain fog’ has yet to be characterized using patient data. Using Rowan Medicine electronic patient data, we were able to collect information on patients before and after the emergence of the coronavirus. Data was collected on reported memory-related symptoms as well as …

Whole Body Cryotherapy As A Novel Treatment For Long Covid Syndrome Associated Brain Fog, James Mack, Brandon Goodwin, Paras Patel, Kyra Herman, Daniel Casal, Emily Levenson

Rowan-Virtua Research Day

SARS-CoV-2, which causes coronavirus disease 2019 (COVID-19), was first discovered in December 2019 in Wuhan, China when adults began presenting with severe pneumonia of an unknown cause. SARS-CoV-2 can cause a wide range of clinical manifestations. SARS-CoV-2 can penetrate the olfactory mucosa and may enter the brain through the cribriform plate along the olfactory tract, through vagal or trigeminal pathways, or pass through the blood-brain barrier. Once inside the brain, levels of inflammatory cytokines are increased and can lead to altered learning, memory, neuroplasticity, hallucinations, nightmares, cognitive and attention deficits, new-onset anxiety and depression, and psychosis. A theoretical treatment for …

The Effectiveness Of Cleaning Protocols In Medical School Omm Labs By Medical Students, Harrison Patrizio, Riley Phyu, Thomas Boyle, Todd Schachter

Rowan-Virtua Research Day

In light of the COVID-19 pandemic, disinfection in healthcare has taken center stage. Healthcare has adjusted workflows to accommodate for more robust cleaning regimens to help protect the community. This has resulted in the need for medical institutions to reevaluate the current cleaning protocols down to the student level. Osteopathic Manipulative Medicine (OMM) lab provides an optimal avenue for assessing medical student’s examination table cleaning effectiveness. With OMM labs being an activity with a high level of interaction, the quality of examination table cleaning is important for the health and safety of students and teaching faculties. Our study highlights that …

Development Of Schizophrenia In A Genetically Predisposed Individual Following Covid-19, Sung Kang, Jonathan Yuh, Timothy Wong

Rowan-Virtua Research Day

We present a patient who is a 56-year-old female with a psychiatric history of anxiety disorder and a medical history of hypercholesterolemia and hyperthyroidism, who was admitted to the hospital after a witnessed seizure at an inpatient psychiatric facility. This patient’s family history is significant for her mother experiencing unspecified psychotic disorder that required psychiatric hospitalization. Our patient was first admitted to the psychiatric hospital after exhibiting worsening paranoid delusions and hallucinations that began several months prior. The patient had reportedly begun locking herself in the restroom and screaming “get out, they’re spying on me”, referring to her next-door neighbors …

Factors That Influence The Decision To Get Vaccinated Against Covid-19, Rhea Bhargava, Meghan H. Foos, Brandy M. Gotti, Alexandra L. Mulvenna, Taylor O. Smith, Danielle Cooley, Venkateswar Venkataman

Rowan-Virtua Research Day

Since the start of the COVID-19 pandemic and the launch of the vaccine, healthcare workers have been encouraging people to get vaccinated to prevent the spread of the virus. However, there is a significant number of people who are vaccine hesitant, or uncertain about receiving the COVID-19 vaccine and its booster. Vaccine hesitancy represents a state of opportunity to make positive change; therefore, it is crucial for healthcare workers to identify those who are in this population. When factors contributing to the vaccine hesitancy, including gender, age, ethnicity, education level, and income were studied, it was found that women, those …

The Effectiveness Of Examination Table Cleaning Protocols In Osteopathic Family Medicine Offices, Riley Phyu, Harrison A. Patrizio, Thomas Boyle, Todd Schachter

Rowan-Virtua Research Day

Contaminated environmental surfaces are responsible for acquisition of healthcare associated infections. In 2002 there were approximately 1.7 million healthcare associated infections, resulting in about 99,000 annual deaths. Appropriate disinfection of environmentally contaminated surfaces are required to reduce transmission of pathogens. Adenosine triphosphate (ATP) bioluminescence is being used in hospital settings to audit the cleanliness in the hospital settings. However, there is a paucity of literature in different healthcare settings outside of hospital settings. This may unintentionally result in a more relaxed cleaning protocol in outpatient settings.

Objective: To assess the effectiveness of disinfecting protocol in osteopathic family medicine offices using …

Effect Of The Covid-19 Pandemic On Hpv Vaccination Rates, Jennifer Sepede, Kathy Chen

Rowan-Virtua Research Day

Human papillomavirus (HPV) is a common sexually transmitted infection that potentiates cancer in both males and females. There are over 200 different types of HPV and while some strains, specifically HPV 6 and 11, may result in genital and skin warts, others remain clinically silent. High risk strains, HPV 16 and 18, are most associated with cervical cancer in women. During the COVID-19 pandemic, there was widespread hesitancy and rejection towards vaccination. Similarly, the Human Papilloma Virus (HPV) vaccine has also been met with distrust since it’s release. Studies have shown that there is a low vaccination rate due to …

Herpesviriae Infection Of The Corneal Endothelium, Behnam Rabiee, Chandani Patel, Mansab Jafri, Hamad Hussain, Michael Gaspari, Muhamad Festok, Imtiaz Chaudhry, Iftikhar Chaudhry, Asim Farooq

Rowan-Virtua Research Day

Background

- The corneal endothelium plays a vital role in maintaining corneal clarity by regulating the amount of fluid in the corneal stroma.

- Corneal endotheliitis is defined as inflammation of the corneal endothelial layer that leads to corneal edema and haziness, and subsequent loss of vision.

- Most common causes include cytomegalovirus (CMV), herpes simplex virus (HSV), and varicella zoster virus (VZV).

- Because corneal endothelial cells cannot regenerate following injury, early diagnosis is essential in proper management and preventing loss of corneal endothelial cells.

In this review we aim to gather the most recent knowledge on viral corneal …

Case Report And Brief Review: Co-Infection Covid-19 Virus And Influenza A Virus, James Espinosa, Umar Sannoh, Alan Lucerna

Rowan-Virtua Research Day

We report the case of a 45 year old male who presented to the an emergency department with a complaint of myalgias, chills and sore throat of a two day duration. The patient tested positive for COVID-19 virus as well as Influenza A virus. The purpose of this brief review is to discuss what is known about co-infection of COVID-19 and influenza A.

Breaking Down Barriers: Investigating Structural And Systemic Factors That Contribute To Covid-19 Disparities In African American Communities In New Jersey, Fazal Choudhary, Suraj Pothineni

Rowan-Virtua Research Day

Background: The COVID-19 pandemic has affected the lives of millions of Americans; however, minority communities have been hit the hardest as infection rates continue to sky rocket and new variants arise. As of October 5, 2021, the CDC reports that African Americans make up a similar share of cases relative to the overall population, at about 12%, but have a significantly higher rate of deaths compared to the population, at approximately14%. African American communities are being disproportionately affected because of higher incidence of chronic diseases, inadequate access to health care, and poorer living and working conditions, which increases their vulnerability …

Echinomycin As A Promising Therapeutic Agent Against Kshv-Related Malignancies, Jungang Chen, Zhen Lin, Jiao Song, Karlie Plaisance-Bonstaff, Jennifer James, Shengyu Mu, Steven R. Post, Lu Dai, Zhiqiang Qin

School of Medicine Faculty Publications

Kaposi’s sarcoma-associated herpesvirus (KSHV) is the etiologic agent of several human cancers, including Kaposi’s sarcoma (KS) and primary effusion lymphoma (PEL), which preferentially arise in immunocompromised patients while lack of effective therapeutic options. Oncoproteins Myc and hypoxia-inducible factor-1α (HIF1α) have been found closely related to KSHV infection, replication and oncogenesis. However, the strategies of dual targeting these two oncoproteins have never been developed and tested for treatments of KSHV-related malignancies. In the current study, we report that treatment of echinomycin dramatically regresses cell growth both in vitro-cultured KSHV + tumor cells and in vivo KS or PEL xenograft mice models, …

An Overview Of Viruses And The Infamous Sars-Cov-2, Jake Sun

The Confluence

Background information on viruses is first presented which include topics like evolution, ecology, history, identification, structure, and application. The novel SARS-CoV-2, which causes COVID-19, pandemic originated in Wuhan, China in December 2019. Millions of people were infected with the virus in a short time period causing urgent concern worldwide. The purpose of this review is to provide a brief and general understanding of the SARS-CoV-2 to increase awareness and actions toward preventive measures. COVID-19 is a (+) ssRNA spherical enveloped virion that causes primarily respiratory illnesses. The S protein interacts with ACE-2 receptors on the host cell to gain entry …

An Investigation On The Effect Of Conserved Hinge Histidine On Influenza Hemagglutinin(Ha2) Protein Conformation Using Md Simulations, Nada Tolba

Chemistry & Biochemistry Undergraduate Honors Theses

Hemagglutinin is a protein on the surface of Human Influenza Viruses.¹ It is composed of two glycopolypeptide domains, the HA1 and HA2 domains. Previous studies have found that across different strains of Influenza viruses, HIS435 residues remain conserved.⁴ In studies where mutations occurred in hinge-site histadine residues, the Influenza virus was inactive.⁴ These investigations indicated a significant role of HIS435 (hinge-site histadines) in virulence. Four systems were created using Molecular dynamics (MD) simulations. Each system was composed of an Isolated HA2 trimer solvated in a 150 mM NaCl rectangular water box at 310 K under isobaric and …

An Ecological Perspective Of American Rodent-Borne Orthohantavirus Surveillance, Nathaniel Mull

Graduate Theses and Dissertations

Orthohantaviruses are a global group of viruses found primarily in rodents, though several viruses have also been found in shrews and moles. Many rodent-borne orthohantaviruses are capable of causing one of several diseases in humans, and the mortality associated with these diseases ranges from < 0.1% - 50% depending on the specific etiological virus. In North and South America, orthohantavirus research was ignited by an outbreak of severe disease in the Four Corners region of the United States in 1993. However, despite the discovery of over 20 orthohantaviruses in the Americas, our understanding of orthohantavirus ecology and virus-host dynamics in this region is still limited, and orthohantavirus surveillance is generally restricted in scope to select regions and small portions of host distributional ranges. In Chapter I, I present a literature review on the current understanding of American rodent-borne orthohantavirus ecology. This review focused on under-studied orthohantaviruses, addressing gaps in knowledge by extrapolating information from well-studied orthohantaviruses, general rodent ecology, and occassionally from Eurasian orthohantavirus-host ecology. There were several key conclusions generated from this review that warrant further research: 1) the large number of putative orthohantaviruses and gaps in orthohantavirus evolution necessitate further surveillance and characterization, 2) orthohantavirus traits differ and are more generalizable based on host taxonomy rather than geography, and 3) orthohantavirus host species are disproportionately found in grasslands and disturbed habitats. In Chapter II, I present a prioritized list of rodent species to target for orthohantavirus surveillance based on predictive modeling using machine learning. Probable orthohantavirus hosts were predicted based on traits of known orthohantavirus hosts using two different types of evidence: RT-PCR and virus isolation. Predicted host distributions were also mapped to identify geographic hotspots to spatially guide future surveillance efforts. In Chapter III, I present a framework for understanding and predicting orthohantavirus traits based on reservoir host phylogeny, as opposed to the traditional geographic dichotomy used to group orthohantaviruses. This framework establishes three distinct orthohantavirus groups: murid-borne orthohantaviruses, arvicoline-borne orthohantaviruses, and non-arvicoline cricetid-borne orthohantaviruses, which differ in several key traits, including the human disease they cause, transmission routes, and virus-host fidelity. In Chapter IV, I compare rodent communities and orthohantavirus prevalence among grassland management regimes. Sites that were periodically burned had high rodent diversity and a high proportion of grassland species. However, rodent seroprevalence for orthohantavirus was also highest in burned sites, representing a trade-off in habitat management outcomes. The high seroprevalence in burned sites is likely due to the robust populations supported by the high quality habitat resulting from prescribed burning. In Chapters V and VI, I describe Ozark virus and Sager Creek virus, two novel orthohantaviruses discovered from specimens collected during Chapter IV. Both chapters report full genome sequences of the respective viruses and compare both nucleotide and protein phylogenies with related orthohantaviruses. Additionally in Chapter VI, I support the genetic analyses with molecular and ecological characterizations, including seasonal fluctuations in host abundance, correlates of prevalence, evidence of virus shedding, and information on host cell susceptibility to Sager Creek virus.

Dengue Virus And Blood Safety: A Mini-Review Of Research Publications, Festus Mulakoli, George Gachara, Eric Ndombi, Samoel Khamadi

School of Nursing & Midwifery, East Africa

The growing demand for donated whole blood and blood products to save lives has both health benefits and health risks for blood recipients at the same time. Dengue virus, a re-emerging viral disease poses a threat to blood safety, and it has spread to over 128 countries in the world. Several studies have documented transfusion-transmitted (TT) dengue, with the first cases being reported in China in 2002 and Singapore in 2008. To understand the magnitude and broader picture of the dengue virus and blood safety, we conducted a mini-review of published literature from the Scopus database. The review focused on …

Incidence And Risk Factors For Clinically Confirmed Secondary Bacterial Infections In Patients Hospitalized For Coronavirus Disease 2019 (Covid-19), Hiromichi S. Park, Caitlin M. Mccracken, Noah Lininger, Cara D. Varley, Multiple Additional Authors

OHSU-PSU School of Public Health Faculty Publications and Presentations

Objective: The true incidence and risk factors for secondary bacterial infections in coronavirus disease 2019 (COVID-19) remains poorly understood. Knowledge of risk factors for secondary infections in hospitalized patients with COVID-19 is necessary to optimally guide selective use of empiric antimicrobial therapy. Design: Single-center retrospective cohort study of symptomatic inpatients admitted for COVID-19 from April 15, 2020, through June 30, 2021. Setting: Academic quaternary-care referral center in Portland, Oregon. Patients: The study included patients who were 18 years or older with a positive severe acute respiratory coronavirus virus 2 (SARS-CoV-2) PCR test up to 10 days prior to admission. Methods: …