Public Health Commons^™

Agreement Between Sars-Cov-2 Pcr Test Results Using Nasopharyngeal And Mid-Turbinate Specimens Among Asymptomatic Working-Age Adults, Judy Wendt Hess, Faiyaz Bhojani, Derrick Cameron, Mary Freire De Carvalho, Fayaz Momin

Faculty, Staff and Student Publications

OBJECTIVE: The aim of this study was to determine whether mid-turbinate specimens reliably detect active infection in asymptomatic adults undergoing regular COVID-19 PCR testing.

METHODS: Qualitative agreement between 2481 paired nasopharyngeal and mid-turbinate PCR results was assessed. Mean cycle threshold values for each positive result were evaluated as an indicator of active infection.

RESULTS: Overall agreement between nasopharyngeal and mid-turbinate tests was 98.4%. Positive percent agreement was 37.2%, and negative percent agreement was ~100%. Test pairs with lower cycle thresholds (≤30 and ≤25) reached 67% and 100% positive percent agreement, respectively.

CONCLUSIONS: SARS-CoV-2 infections with high viral loads were detected …

Agreement Between Sars-Cov-2 Pcr Test Results Using Nasopharyngeal And Mid-Turbinate Specimens Among Asymptomatic Working-Age Adults, Judy Wendt Hess, Faiyaz Bhojani, Derrick Cameron, Mary Freire De Carvalho, Fayaz Momin

Faculty, Staff and Student Publications

OBJECTIVE: The aim of this study was to determine whether mid-turbinate specimens reliably detect active infection in asymptomatic adults undergoing regular COVID-19 PCR testing.

METHODS: Qualitative agreement between 2481 paired nasopharyngeal and mid-turbinate PCR results was assessed. Mean cycle threshold values for each positive result were evaluated as an indicator of active infection.

RESULTS: Overall agreement between nasopharyngeal and mid-turbinate tests was 98.4%. Positive percent agreement was 37.2%, and negative percent agreement was ~100%. Test pairs with lower cycle thresholds (≤30 and ≤25) reached 67% and 100% positive percent agreement, respectively.

CONCLUSIONS: SARS-CoV-2 infections with high viral loads were detected …

Biophysical And Biochemical Characterization Of The Receptor Binding Domain Of Sars-Cov-2 Variants, Ritika Khatri, Hilal Ahmad Parray, Gazala Siddiqui, Adarsh Kumar Chiranjivi, Sneha Raj, Rachel Kaul, Vikas Maithil, Sweety Samal, Shubbir Ahmed

Faculty, Staff and Student Publications

The newly emerging SARS-CoV-2 variants are potential threat and posing new challenges for medical intervention due to high transmissibility and escaping neutralizing antibody (NAb) responses. Many of these variants have mutations in the receptor binding domain (RBD) of SARS-CoV-2 spike protein that interacts with the host cell receptor. Rapid mutation in the RBD through natural selection to improve affinity for host receptor and antibody pressure from vaccinated or infected individual will greatly impact the presently adopted strategies for developing interventions. Understanding the nature of mutations and how they impact the biophysical, biochemical and immunological properties of the RBD will help …

Co2 Levels Behind And In Front Of Different Protective Mask Types, Hossein Akhondi, Sassan Kaveh, Kimball Kaufman, Tina Danai, Napatkamon Ayutyanont

HCA Healthcare Journal of Medicine

Objectives

Many individuals have difficulty adapting to face mask use and report symptoms while using masks. Our primary objective was to determine whether continuous mask-wearing causes elevated levels of carbon dioxide (CO₂) behind the facemasks.

Methods

CO₂ concentrations were measured behind 3 different types of face masks and were compared to CO^₂ concentrations at the mask front in 261 subjects who continuously wore masks for at least 5 minutes. These CO₂ concentrations were also measured in several randomly selected subjects after a 5-minute walk.

Results

There were significantly higher CO₂ concentrations behind the mask …

Sars-Cov-2 Antibody Seroprevalence In Jakarta, Indonesia, Iwan Ariawan, Hafizah Jusril, Muhammad N Farid, Pandu Riono, Wiji Wahyuningsih, Widyastuti Widyastuti, Dwi Oktavia T L Handayani, Endang Sri Wahyuningsih, Rebekka Daulay, Retno Henderiawati, Safarina G. Malik, Rintis Noviyanti, Leily Trianty, Nadia Fadila, Khin Saw Aye Myint, Frilasita A. Yudhaputri, Neeraja Venkateswaran, Kodumudi Venkateswaran, Venkatachalam Udhayakumar, William A. Hawley, Juliette Morgan, Paul M. Pronyk

Kesmas

The SARS-CoV-2 transmission dynamics in low- and middle-income countries remain poorly understood. This study aimed to estimate the SARS-CoV-2 antibodies seroprevalence in Jakarta, Indonesia, and to increase knowledge of SARS-CoV-2 transmission in urban settings. A population-based serosurvey among individuals aged one year or older was conducted in Jakarta. Employing a multistage sampling design, samples were stratified by district, slum, and non-slum residency, sex, and age group. Blood samples were tested for IgG against three different SARS-CoV-2 antigens. Seroprevalence was estimated after applying sample weights and adjusting for cluster characteristics. In March 2021, this study collected 4,919 respondents. The weighted estimate …

Igg Antibodies To Sars-Cov-2 In Asymptomatic Blood Donors At Two Time Points In Karachi, Muhammad Hasan, Bushra Moiz, Shama Qaiser, Kiran I. Masood, Zara Ghous, Areeba Hussain, Natasha Bahadur Ali, Syed Hani Abidi, Kulsoom Ghias, Erum Khan, Zahra Hasan

Department of Pathology and Laboratory Medicine

Introduction: An estimated 1.5 million cases were reported in Pakistan until 23 March, 2022. However, SARS-CoV-2 PCR testing capacity has been limited and the incidence of COVID-19 infections is unknown. Volunteer healthy blood donors can be a control population for assessment of SARS-CoV-2 exposure in the population. We determined COVID-19 seroprevalence during the second pandemic wave in Karachi in donors without known infections or symptoms in 4 weeks prior to enrollment.
Materials and methods: We enrolled 558 healthy blood donors at the Aga Khan University Hospital between December 2020 and February 2021. ABO blood groups were determined. Serum IgG reactivity …

Effectiveness And Adherence To Closed Face Shields In The Prevention Of Covid-19 Transmission: A Non-Inferiority Randomized Controlled Trial In A Middle-Income Setting (Covproshield), Andrea Ramirez Varela, Alejandro Pacheco Gurruchaga, Silvia Restrepo Restrepo, Juan David Martin, Yessica Daniela Campaz Landazabal, Guillermo Tamayo-Cabeza, Sandra Contreras-Arrieta, Yuldor Caballero-Díaz, Luis Jorge Hernandez Florez, John Mario González, Juan Carlos Santos-Barbosa, José David Pinzón, Juan José Yepes-Nuñez, Rachid Laajaj, Giancarlo Buitrago Gutierrez, Martha Vives Florez, Janner Fuentes Castillo, Gianni Quinche Vargas, Andres Casas, Antonio Medina, Eduardo Behrentz, Covida Working Group

Faculty, Staff and Student Publications

BACKGROUND: The use of respiratory devices can mitigate the spread of diseases such as COVID-19 in community settings. We aimed to determine the effectiveness of closed face shields with surgical face masks to prevent SARS-CoV-2 transmission in working adults during the COVID-19 pandemic in Bogotá, Colombia.

METHODS: An open-label non-inferiority randomized controlled trial that randomly assigned participants to one of two groups: the intervention group was instructed to wear closed face shields with surgical face masks, and the active control group was instructed to wear only surgical face masks. The primary outcome was a positive reverse transcription polymerase chain reaction …

Omicron Spike Function And Neutralizing Activity Elicited By A Comprehensive Panel Of Vaccines, John E. Bowen, Amin Addetia, Ha V Dang, Cameron Stewart, Jack T. Brown, William K. Sharkey, Kaitlin R. Sprouse, Kumail Ahmed, Asefa Shariq Ansari, Najeeha Talat Iqbal

Department of Paediatrics and Child Health

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant of concern comprises several sublineages, with BA.2 and BA.2.12.1 having replaced the previously dominant BA.1 and with BA.4 and BA.5 increasing in prevalence worldwide. We show that the large number of Omicron sublineage spike mutations leads to enhanced angiotensin-converting enzyme 2 (ACE2) binding, reduced fusogenicity, and severe dampening of plasma neutralizing activity elicited by infection or seven clinical vaccines relative to the ancestral virus. Administration of a homologous or heterologous booster based on the Wuhan-Hu-1 spike sequence markedly increased neutralizing antibody titers and breadth against BA.1, BA.2, BA.2.12.1, BA.4, and …

Statistical Analysis Methods Applied To Early Outpatient Covid-19 Treatment Case Series Data, Eleftherios Gkioulekas, Peter A. Mccullough, Vladimir Zelenko

School of Mathematical & Statistical Sciences Faculty Publications

When confronted with a public health emergency, significant innovative treatment protocols can sometimes be discovered by medical doctors at the front lines based on repurposed medications. We propose a statistical framework for analyzing the case series of patients treated with such new protocols, that enables a comparison with our prior knowledge of expected outcomes, in the absence of treatment. The goal of the proposed methodology is not to provide a precise measurement of treatment efficacy, but to establish the existence of treatment efficacy, in order to facilitate the binary decision of whether the treatment protocol should be adopted on an …

Improved Sars-Cov-2 Sequencing Surveillance Allows The Identification Of New Variants And Signatures In Infected Patients, Antonio Grimaldi, Francesco Panariello, Patrizia Annunziata, Teresa Giuliano, Michela Daniele, Biancamaria Pierri, Chiara Colantuono, Marcello Salvi, Valentina Bouché, Anna Manfredi, Maria Concetta Cuomo, Denise Di Concilio, Claudia Tiberio, Mariano Fiorenza, Giuseppe Portella, Ilaria Cimmino, Antonio Sorrentino, Giovanna Fusco, Maria Rosaria Granata, Pellegrino Cerino, Antonio Limone, Luigi Atripaldi, Andrea Ballabio, Davide Cacchiarelli

Duncan NRI Faculty and Staff Publications

Background: Genomic surveillance of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the only approach to rapidly monitor and tackle emerging variants of concern (VOC) of the COVID-19 pandemic. Such scrutiny is crucial to limit the spread of VOC that might escape the immune protection conferred by vaccination strategies or previous virus exposure. It is also becoming clear now that efficient genomic surveillance would require monitoring of the host gene expression to identify prognostic biomarkers of treatment efficacy and disease progression. Here we propose an integrative workflow to both generate thousands of SARS-CoV-2 genome sequences per week and analyze host …

Risk Of Transmission Of Respiratory Viruses During Aerosol-Generating Medical Procedures (Agmps) Revisited In The Covid-19 Pandemic: A Systematic Review, Jenine Leal, Brenlea Farkas, Liza Mastikhina, Jordyn Flanagan, Becky Skidmore, Charleen Salmon, Devika Dixit, Stephanie Smith, Stephen Tsekrekos, Bonita Lee, Joseph Vayalumkal, Jessica Dunn, Robyn Harrison, Melody Cordoviz, Roberta Dubois, Uma Chandran, Fiona Clement, Kathryn Bush, John Conly, Oscar Larios

Faculty, Staff and Student Publications

BACKGROUND: In many jurisdictions healthcare workers (HCWs) are using respirators for aerosol-generating medical procedures (AGMPs) performed on adult and pediatric populations with all suspect/confirmed viral respiratory infections (VRIs). This systematic review assessed the risk of VRIs to HCWs in the presence of AGMPs, the role respirators versus medical/surgical masks have on reducing that risk, and if the risk to HCWs during AGMPs differed when caring for adult or pediatric patient populations.

MAIN TEXT: We searched MEDLINE, EMBASE, Cochrane Central, Cochrane SR, CINAHL, COVID-19 specific resources, and MedRxiv for English and French articles from database inception to September 9, 2021. Independent …

A Systematic Review And Meta-Analysis On Prevalence Of And Risk Factors Associated With Depression, Anxiety And Insomnia In Infectious Diseases, Including Covid-19: A Call To Action, Kai Yuan, Yong-Bo Zheng, Yi-Jie Wang, Yan-Kun Sun, Yi-Miao Gong, Yue-Tong Huang, Xuan Chen, Xiao-Xing Liu, Yi Zhong, Si-Zhen Su, Nan Gao, Yi-Long Lu, Zhe Wang, Wei-Jian Liu, Jian-Yu Que, Ying-Bo Yang, An-Yi Zhang, Meng-Ni Jing, Chen-Wei Yuan, Na Zeng, Michael V Vitiello, Vikram Patel, Seena Fazel, Harry Minas, Graham Thornicroft, Teng-Teng Fan, Xiao Lin, Wei Yan, Le Shi, Jie Shi, Thomas Kosten, Yan-Ping Bao, Lin Lu

Children’s Nutrition Research Center Staff Publications

Infectious disease epidemics have become more frequent and more complex during the 21st century, posing a health threat to the general public and leading to psychological symptoms. The current study was designed to investigate the prevalence of and risk factors associated with depression, anxiety and insomnia symptoms during epidemic outbreaks, including COVID-19. We systematically searched the PubMed, Embase, Web of Science, OVID, Medline, Cochrane databases, bioRxiv and medRxiv to identify studies that reported the prevalence of depression, anxiety or insomnia during infectious disease epidemics, up to August 14th, 2020. Prevalence of mental symptoms among different populations including the general public, …

International Prevalence And Mechanisms Of Sars-Cov-2 In Childhood Arterial Ischemic Stroke During The Covid-19 Pandemic, Lauren A Beslow, Shannon C Agner, Jonathan D Santoro, Dipak Ram, Jenny L Wilson, Dana Harrar, Brian Appavu, Stuart M Fraser, Thomas Rossor, Marcela D Torres, Manoëlle Kossorotoff, Yenny C Zuñiga Zambrano, Marta Hernández-Chávez, Sahar M A Hassanein, Dimitrios Zafeiriou, Michael M Dowling, Ilona Kopyta, Nicholas V Stence, Timothy J Bernard, Nomazulu Dlamini

Faculty, Staff and Student Publications

BACKGROUND: Data from the early pandemic revealed that 0.62% of children hospitalized with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) had an acute arterial ischemic stroke (AIS). In a larger cohort from June 2020 to December 2020, we sought to determine whether our initial point estimate was stable as the pandemic continued and to understand radiographic and laboratory data that may clarify mechanisms of pediatric AIS in the setting of SARS-CoV-2.

METHODS: We surveyed international sites with pediatric stroke expertise to determine numbers of hospitalized SARS-CoV-2 patients <18 >years, numbers of incident AIS cases among children (29 days to <18 >years), frequency …

Sars-Cov-2 Infection: Host Response, Immunity, And Therapeutic Targets, Pooja Shivshankar, Harry Karmouty-Quintana, Tingting Mills, Marie-Francoise Doursout, Yanyu Wang, Agnieszka K Czopik, Scott E Evans, Holger K Eltzschig, Xiaoyi Yuan

Faculty, Staff and Student Publications

Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has resulted in a global pandemic with severe socioeconomic effects. Immunopathogenesis of COVID-19 leads to acute respiratory distress syndrome (ARDS) and organ failure. Binding of SARS-CoV-2 spike protein to human angiotensin-converting enzyme 2 (hACE2) on bronchiolar and alveolar epithelial cells triggers host inflammatory pathways that lead to pathophysiological changes. Proinflammatory cytokines and type I interferon (IFN) signaling in alveolar epithelial cells counter barrier disruption, modulate host innate immune response to induce chemotaxis, and initiate the resolution of inflammation. Here, we discuss experimental models to study SARS-CoV-2 …

Antibody Evasion By Sars-Cov-2 Omicron Subvariants Ba2121, Ba4 And Ba5, Qian Wang, Yicheng Guo, Sho Iketani, Manoj S Nair, Zhiteng Li, Hiroshi Mohri, Maple Wang, Jian Yu, Anthony D Bowen, Jennifer Y Chang, Jayesh G Shah, Nadia Nguyen, Zhiwei Chen, Kathrine Meyers, Michael T Yin, Magdalena E Sobieszczyk, Zizhang Sheng, Yaoxing Huang, Lihong Liu, David D Ho

Faculty, Staff and Student Publications

SARS-CoV-2 Omicron subvariants BA.2.12.1 and BA.4/5 have surged notably to become dominant in the United States and South Africa, respectively1,2. These new subvariants carrying further mutations in their spike proteins raise concerns that they may further evade neutralizing antibodies, thereby further compromising the efficacy of COVID-19 vaccines and therapeutic monoclonals. We now report findings from a systematic antigenic analysis of these surging Omicron subvariants. BA.2.12.1 is only modestly (1.8-fold) more resistant to sera from vaccinated and boosted individuals than BA.2. However, BA.4/5 is substantially (4.2-fold) more resistant and thus more likely to lead to vaccine breakthrough infections. Mutation at spike …

Implementation Of Multi-Level Interventions To Mitigate Risk Of Sars-Cov-2 Delta Variant At A Public University In Southern United States, Keena N. Arbuthnot, Rebecca C. Christofferson, Edward J. Trapido, John H. Pardue, John N. Perret, William F. Tate

School of Public Health Faculty Publications

During the coronavirus disease 2019 (COVID-19) pandemic, navigating the implementation of public health measures in a politically charged environment for a large state entity was challenging. However, Louisiana State University (LSU) leadership developed and deployed an effective, multi-layered mitigation plan and successfully opened in-person learning while managing cases of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) during the fourth surge. We describe the plan to provide a framework for other institutions during this and future responses. The goals were 3-fold: maintain a quality learning environment, mitigate risk to the campus community, and ensure that LSU operations did not contribute to …

Resilience And Protection Of Health Care And Research Laboratory Workers During The Sars-Cov-2 Pandemic: Analysis And Case Study From An Austrian High Security Laboratory, Martina Loibner, Paul Barach, Stella Wolfgruber, Christine Langner, Verena Stangl, Julia Rieger, Esther Föderl-Höbenreich, Melina Hardt, Eva Kicker, Silvia Groiss, Martin Zacharias, Philipp Wurm, Gregor Gorkiewicz, Peter Regitnig, Kurt Zatloukal

College of Population Health Faculty Papers

The SARS-CoV-2 pandemic has highlighted the interdependency of healthcare systems and research organizations on manufacturers and suppliers of personnel protective equipment (PPE) and the need for well-trained personnel who can react quickly to changing working conditions. Reports on challenges faced by research laboratory workers (RLWs) are rare in contrast to the lived experience of hospital health care workers. We report on experiences gained by RLWs (e.g., molecular scientists, pathologists, autopsy assistants) who significantly contributed to combating the pandemic under particularly challenging conditions due to increased workload, sickness and interrupted PPE supply chains. RLWs perform a broad spectrum of work with …

Influenza Activity And Composition Of The 2022-23 Influenza Vaccine - United States, 2021-22 Season, Angiezel Merced-Morales, Peter Daly, Anwar Isa Abd Elal, Noreen Ajayi, Ekow Annan, Alicia Budd, John Barnes, Arielle Colon, Charisse N Cummings, A Danielle Iuliano, Juliana Dasilva, Nick Dempster, Shikha Garg, Larisa Gubareva, Daneisha Hawkins, Amanda Howa, Stacy Huang, Marie Kirby, Krista Kniss, Rebecca Kondor, Jimma Liddell, Shunte Moon, Ha T Nguyen, Alissa O'Halloran, Catherine Smith, Thomas Stark, Katie Tastad, Dawud Ujamaa, Dave E Wentworth, Alicia M Fry, Vivien G Dugan, Lynnette Brammer

Faculty, Staff and Student Publications

Before the emergence of SARS-CoV-2, the virus that causes COVID-19, influenza activity in the United States typically began to increase in the fall and peaked in February. During the 2021-22 season, influenza activity began to increase in November and remained elevated until mid-June, featuring two distinct waves, with A(H3N2) viruses predominating for the entire season. This report summarizes influenza activity during October 3, 2021-June 11, 2022, in the United States and describes the composition of the Northern Hemisphere 2022-23 influenza vaccine. Although influenza activity is decreasing and circulation during summer is typically low, remaining vigilant for influenza infections, performing testing …

Real-World Third Covid-19 Vaccine Dosing And Antibody Response In Patients With Hematologic Malignancies, Michael A. Thompson, Sigrun Hallmeyer, Veronica E. Fitzpatrick, Yunqi Liao, Michael P. Mullane, Stephen C. Medlin, Kenneth Copeland, James L. Weese

Journal of Patient-Centered Research and Reviews

Purpose: This study sought to describe the changes in immune response to a third dose of either Pfizer’s or Moderna’s COVID-19 mRNA vaccine (3V) among patients with hematologic malignancies, as well as associated characteristics

Methods: This retrospective cohort study analyzed pre-3V and post-3V data on 493 patients diagnosed with hematologic malignancies across a large Midwestern health system between August 28, 2021, and November 1, 2021. For antibody testing, S1 spike antigen of the SARS-CoV-2 virus titer was used to determine serostatus.

Results: Among 493 participants, 274 (55.6%) were seropositive both pre- and post-3V (+/+) while 115 (23.3%) seroconverted to positive …

What About Anosmia From Covid-19 ?, Sharanya S E Santhi, Sara Elnour, Steven B Lippmann

The University of Louisville Journal of Respiratory Infections

No abstract provided.

Drug-Target Network Study Reveals The Core Target-Protein Interactions Of Various Covid-19 Treatments, Yulin Dai, Hui Yu, Qiheng Yan, Bingrui Li, Andi Liu, Wendao Liu, Xiaoqian Jiang, Yejin Kim, Yan Guo, Zhongming Zhao

Faculty, Staff and Student Publications

The coronavirus disease 2019 (COVID-19) pandemic has caused a dramatic loss of human life and devastated the worldwide economy. Numerous efforts have been made to mitigate COVID-19 symptoms and reduce the death rate. We conducted literature mining of more than 250 thousand published works and curated the 174 most widely used COVID-19 medications. Overlaid with the human protein-protein interaction (PPI) network, we used Steiner tree analysis to extract a core subnetwork that grew from the pharmacological targets of ten credible drugs ascertained by the CTD database. The resultant core subnetwork consisted of 34 interconnected genes, which were associated with 36 …

Assessing Covid-19 Booster Hesitancy And Its Correlates: An Early Evidence From India, Geetanjali C. Achrekar, Kavita Batra, Yashashri Urankar, Ravi Batra, Naved Iqbal, Sabiha A. Choudhury, Deepti Hooda, Roohi Khan, Suraj Arora, Aditi Singh, Francesco Chirico, Manoj Sharma

School of Medicine Faculty Research

The emergence of SARS-CoV-2 mutants, waning immunity, and breakthrough infections prompted the use of booster doses of the COVID-19 vaccine to fight against the pandemic. India started booster doses in January 2022 and it is critical to determine the intention of booster dose uptake and its correlates. Therefore, the current cross-sectional study aimed to investigate booster dose acceptability and associated predictors among the Indian population. A convenience sampling technique was utilized to recruit a sample of 687 Indian residents. A 55-item psychometric validated survey tool was used to assess booster dose acceptability, vaccine literacy and vaccine confidence. Univariate, bivariate, and …

Gain-Of-Signal Assays For Probing Inhibition Of Sars-Cov-2 Mpro/3clpro In Living Cells, Seyed Arad Moghadasi, Morgan A Esler, Yuka Otsuka, Jordan T Becker, Sofia N Moraes, Constance B Anderson, Srinivas Chamakuri, Christopher Belica, Chloe Wick, Daniel A Harki, Damian W Young, Louis Scampavia, Timothy P Spicer, Ke Shi, Hideki Aihara, William L Brown, Reuben S Harris

Faculty, Staff and Students Publications

The main protease, Mpro, of SARS-CoV-2 is required to cleave the viral polyprotein into precise functional units for virus replication and pathogenesis. Here, we report quantitative reporters for Mpro function in living cells in which protease inhibition by genetic or chemical methods results in robust signal readouts by fluorescence (enhanced green fluorescent protein [eGFP]) or bioluminescence (firefly luciferase). These gain-of-signal systems are scalable to high-throughput platforms for quantitative discrimination between Mpro mutants and/or inhibitor potencies as evidenced by validation of several reported inhibitors. Additional utility is shown by single Mpro amino acid variants and structural information combining to demonstrate that …

Treating Cytokine Storm In Patients With Covid-19, Ahmed Abdelhaleem, Deekshitha Turaka, Shameera Shaik Masthan, Steven B Lippmann

The University of Louisville Journal of Respiratory Infections

No abstract provided.

Biochemical, Biophysical, And Immunological Characterization Of Respiratory Secretions In Severe Sars-Cov-2 Infections, Michael J Kratochvil, Gernot Kaber, Sally Demirdjian, Pamela C Cai, Elizabeth B Burgener, Nadine Nagy, Graham L Barlow, Medeea Popescu, Mark R Nicolls, Michael G Ozawa, Donald P Regula, Ana E Pacheco-Navarro, Samuel Yang, Vinicio A De Jesus Perez, Harry Karmouty-Quintana, Andrew M Peters, Bihong Zhao, Maximilian L Buja, Pamela Y Johnson, Robert B Vernon, Thomas N Wight, Carlos E Milla, Angela J Rogers, Andrew J Spakowitz, Sarah C Heilshorn, Paul L Bollyky

Faculty, Staff and Student Publications

Thick, viscous respiratory secretions are a major pathogenic feature of COVID-19, but the composition and physical properties of these secretions are poorly understood. We characterized the composition and rheological properties (i.e., resistance to flow) of respiratory secretions collected from intubated COVID-19 patients. We found the percentages of solids and protein content were greatly elevated in COVID-19 compared with heathy control samples and closely resembled levels seen in cystic fibrosis, a genetic disease known for thick, tenacious respiratory secretions. DNA and hyaluronan (HA) were major components of respiratory secretions in COVID-19 and were likewise abundant in cadaveric lung tissues from these …

Unpacking Misinfodemic During A Global Health Crisis: A Qualitative Inquiry Of Psychosocial Characteristics In Social Media Interactions, Sofia M Olivares, Sahiti Myneni

Faculty, Staff and Student Publications

The pervasiveness of health information in social media has led to a modern misinformation crisis, also known as a misinfodemic. Misinfodemics have upended public health activities as clearly evident during the COVID-19 pandemic. The objective of this study is to characterize social media content and information sources using theory-driven health behavior and psychology constructs to better understand the motifs of misinformation and their role in the dissemination of health (mis)information in Twitter posts. We analyzed 1,400 randomly selected tweets related to COVID-19 to ascertain four important variables, what is the tweet about (content), how is it structured (linguistic features), who …

Evolution Of International Pediatric Endoscopic Practice Changes During The Coronavirus Disease 2019 Pandemic, Wenly Ruan, Douglas S Fishman, Diana G Lerner, Raoul I Furlano, Mike Thomson, Catharine M Walsh

Faculty, Staff and Students Publications

OBJECTIVES: The coronavirus disease 2019 (COVID-19) pandemic has drastically altered endoscopic practices. We initially reported the international impact of COVID-19 on pediatric endoscopic practice. This follow-up study aimed to assess changes 7 months following the initial survey to delineate practice change patterns as the pandemic evolved.

METHODS: Pediatric gastroenterologists who responded to the initial survey were re-surveyed seven months later using Research Electronic Data Capture (REDCap). The survey recorded information on changes in pediatric endoscopic practice patterns, including COVID-19 screening and testing processes and personal protective equipment (PPE) utilization. Additionally, endoscopists' risk tolerance of COVID-19 transmission was evaluated.

RESULTS: Seventy-five …

Pneumothorax And Pneumomediastinum In Covid-19: A Case Series, Stephan Reyes, Brad Roche, Farah Kazzaz, Daniel Ocazionez, Aditya P Lal, Rosa M Estrada-Y-Martin, Sujith V Cherian

Faculty, Staff and Student Publications

COVID- 19 has become a major pandemic affecting more than 11 million people worldwide. Common radiological manifestations of COVID-19 include peripheral based ground-glass or consolidative opacities; however, pneumothorax and pneumo-mediastinum are very rare manifestations; even more so within patients not on mechanical ventilation. We present a case series of 5 patients with COVID-19 who either presented with or developed spontaneous pneumothorax or pneumo-mediastinum within the course of hospitalization. With the exception of one patient, all other patients developed pneumothorax as a late manifestation in their illness; more than 10 days after initial symptom onset in COVID-19. From within this case …

Factors Associated With Covid-19 Death In The United States: Cohort Study, Uan-I Chen, Hua Xu, Trudy Millard Krause, Raymond Greenberg, Xiao Dong, Xiaoqian Jiang

Faculty, Staff and Student Publications

BACKGROUND: Since the initial COVID-19 cases were identified in the United States in February 2020, the United States has experienced a high incidence of the disease. Understanding the risk factors for severe outcomes identifies the most vulnerable populations and helps in decision-making.

OBJECTIVE: This study aims to assess the factors associated with COVID-19-related deaths from a large, national, individual-level data set.

METHODS: A cohort study was conducted using data from the Optum de-identified COVID-19 electronic health record (EHR) data set; 1,271,033 adult participants were observed from February 1, 2020, to August 31, 2020, until their deaths due to COVID-19, deaths …

Factors Associated With Covid-19 Death In The United States: Cohort Study, Uan-I Chen, Hua Xu, Trudy Millard Krause, Raymond Greenberg, Xiao Dong, Xiaoqian Jiang

Faculty, Staff and Student Publications

Background: Since the initial COVID-19 cases were identified in the United States in February 2020, the United States has experienced a high incidence of the disease. Understanding the risk factors for severe outcomes identifies the most vulnerable populations and helps in decision-making.

Objective: This study aims to assess the factors associated with COVID-19-related deaths from a large, national, individual-level data set.

Methods: A cohort study was conducted using data from the Optum de-identified COVID-19 electronic health record (EHR) data set; 1,271,033 adult participants were observed from February 1, 2020, to August 31, 2020, until their deaths due to COVID-19, deaths …