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2021

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A Retrospective Observational Study: Is Absolute Lymphocyte Count A Prognostic Marker In Covid-19?, Mansoor Zafar, Muhammad Shahbaz, Mangala Karkhanis, Mohamed Abdelbagi, Opeyemi A. Makanjuola, Bipin Pun, Ratan S. Randhawa, Frederic Cuison, Dana Safarova, Najam-Us-Saher Rizvi Jul 2021

A Retrospective Observational Study: Is Absolute Lymphocyte Count A Prognostic Marker In Covid-19?, Mansoor Zafar, Muhammad Shahbaz, Mangala Karkhanis, Mohamed Abdelbagi, Opeyemi A. Makanjuola, Bipin Pun, Ratan S. Randhawa, Frederic Cuison, Dana Safarova, Najam-Us-Saher Rizvi

Section of Internal Medicine

Aim: Our study aimed to find a correlation between low absolute lymphocyte count and COVID-19-related mortality.
Methods: This study followed a retrospective observational cohort design to analyze the data of patients who presented with symptoms and signs of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), at the Conquest Hospital and Eastbourne District General Hospital in East Sussex, United Kingdom, between February 10, 2020 and May 1, 2020, retrospectively. Survival and mortality for the first 30 days and comorbidities were analyzed for all patients who were tested for COVID-19 irrespective of swab results and had blood lymphocyte levels taken at the …


A Single Dose Of Replication-Competent Vsv-Vectored Vaccine Expressing Sars-Cov-2 S1 Protects Against Virus Replication In A Hamster Model Of Severe Covid-19., Delphine C. Malherbe, Drishya Kurup, Christoph Wirblich, Adam J. Ronk, Chad Mire, Natalia Kuzmina, Noor Shaik, Sivakumar Periasamy, Matthew A. Hyde, Julie M. Williams, Pei-Yong Shi, Matthias J. Schnell, Alexander Bukreyev Jul 2021

A Single Dose Of Replication-Competent Vsv-Vectored Vaccine Expressing Sars-Cov-2 S1 Protects Against Virus Replication In A Hamster Model Of Severe Covid-19., Delphine C. Malherbe, Drishya Kurup, Christoph Wirblich, Adam J. Ronk, Chad Mire, Natalia Kuzmina, Noor Shaik, Sivakumar Periasamy, Matthew A. Hyde, Julie M. Williams, Pei-Yong Shi, Matthias J. Schnell, Alexander Bukreyev

Department of Microbiology and Immunology Faculty Papers

The development of effective countermeasures against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the agent responsible for the COVID-19 pandemic, is a priority. We designed and produced ConVac, a replication-competent vesicular stomatitis virus (VSV) vaccine vector that expresses the S1 subunit of SARS-CoV-2 spike protein. We used golden Syrian hamsters as animal models of severe COVID-19 to test the efficacy of the ConVac vaccine. A single vaccine dose elicited high levels of SARS-CoV-2 specific binding and neutralizing antibodies; following intranasal challenge with SARS-CoV-2, animals were protected from weight loss and viral replication in the lungs. No enhanced pathology was observed …


The Antimalarial Mmv688533 Provides Potential For Single-Dose Cures With A High Barrier To, James M. Murithi, Cécile Pascal, Jade Bath, Xavier Boulenc, Nina F. Gnädig, Charisse Flerida A. Pasaje, Kelly Rubiano, Tomas Yeo, Sachel Mok, Sylvie Klieber, Paul Desert, María Belén Jiménez-Díaz, Jutta Marfurt, Mélanie Rouillier, Mohammed H. Cherkaoui-Rbati, Nathalie Gobeau, Sergio Wittlin, Anne-Catrin Uhlemann, Ric N. Price, Grennady Wirjanata, Rintis Noviyanti, Patrick K. Tumwebaze, Roland A. Cooper, Philip J. Rosenthal, Laura M. Sanz, Francisco-Javier Gamo, Jayan Joseph, Shivendra Singh, Sridevi Bashyam, Jean Michel Augereau, Elie Giraud, Tanguy Bozec, Thierry Vermat, Gilles Tuffal, Jean-Michel Guillon, Jérôme Menegotto, Laurent Sallé, Guillaume Louit, Marie-José Cabanis, Marie Françoise Nicolas, Michel Doubovetzky, Rita Merino, Nadir Bessila, Iñigo Angulo-Barturen, Delphine Baud, Lidiya Bebrevska, Fanny Escudié, Jacquin C. Niles, Benjamin Blasco, Simon Campbell, Gilles Courtemanche, Laurent Fraisse, Alain Pellet, David A. Fidock, Didier Leroy Jul 2021

The Antimalarial Mmv688533 Provides Potential For Single-Dose Cures With A High Barrier To, James M. Murithi, Cécile Pascal, Jade Bath, Xavier Boulenc, Nina F. Gnädig, Charisse Flerida A. Pasaje, Kelly Rubiano, Tomas Yeo, Sachel Mok, Sylvie Klieber, Paul Desert, María Belén Jiménez-Díaz, Jutta Marfurt, Mélanie Rouillier, Mohammed H. Cherkaoui-Rbati, Nathalie Gobeau, Sergio Wittlin, Anne-Catrin Uhlemann, Ric N. Price, Grennady Wirjanata, Rintis Noviyanti, Patrick K. Tumwebaze, Roland A. Cooper, Philip J. Rosenthal, Laura M. Sanz, Francisco-Javier Gamo, Jayan Joseph, Shivendra Singh, Sridevi Bashyam, Jean Michel Augereau, Elie Giraud, Tanguy Bozec, Thierry Vermat, Gilles Tuffal, Jean-Michel Guillon, Jérôme Menegotto, Laurent Sallé, Guillaume Louit, Marie-José Cabanis, Marie Françoise Nicolas, Michel Doubovetzky, Rita Merino, Nadir Bessila, Iñigo Angulo-Barturen, Delphine Baud, Lidiya Bebrevska, Fanny Escudié, Jacquin C. Niles, Benjamin Blasco, Simon Campbell, Gilles Courtemanche, Laurent Fraisse, Alain Pellet, David A. Fidock, Didier Leroy

Natural Sciences and Mathematics | Faculty Scholarship

The emergence and spread of Plasmodium falciparum resistance to first-line antimalarials creates an imperative to identify and develop potent preclinical candidates with distinct modes of action. Here, we report the identification of MMV688533, an acylguanidine that was developed following a whole-cell screen with compounds known to hit high-value targets in human cells. MMV688533 displays fast parasite clearance in vitro and is not cross-resistant with known antimalarials. In a P. falciparum NSG mouse model, MMV688533 displays a long-lasting pharmacokinetic profile and excellent safety. Selection studies reveal a low propensity for resistance, with modest loss of potency mediated by point mutations in …


Dc-Derived Exosomes For Cancer Immunotherapy, Yi Yao, Chunmei Fu, Li Zhou, Qing-Sheng Mi, Aimin Jiang Jul 2021

Dc-Derived Exosomes For Cancer Immunotherapy, Yi Yao, Chunmei Fu, Li Zhou, Qing-Sheng Mi, Aimin Jiang

Dermatology Articles

As the initiators of adaptive immune responses, DCs play a central role in regulating the balance between CD8 T cell immunity versus tolerance to tumor antigens. Exploiting their function to potentiate host anti-tumor immunity, DC-based vaccines have been one of most promising and widely used cancer immunotherapies. However, DC-based cancer vaccines have not achieved the promised success in clinical trials, with one of the major obstacles being tumor-mediated immunosuppression. A recent discovery on the critical role of type 1 conventional DCs (cDC1s) play in cross-priming tumor-specific CD8 T cells and determining the anti-tumor efficacy of cancer immunotherapies, however, has highlighted …


The Antimalarial Mmv688533 Provides Potential For Single-Dose Cures With A High Barrier To, James M. Murithi, Cécile Pascal, Jade Bath, Xavier Boulenc, Nina F. Gnädig, Charisse Flerida A. Pasaje, Kelly Rubiano, Tomas Yeo, Sachel Mok, Sylvie Klieber, Paul Desert, María Belén Jiménez-Díaz, Jutta Marfurt, Mélanie Rouillier, Mohammed H. Cherkaoui-Rbati, Nathalie Gobeau, Sergio Wittlin, Anne-Catrin Uhlemann, Ric N. Price, Grennady Wirjanata, Rintis Noviyanti, Patrick Tumwebaze, Roland A. Cooper, Philip J. Rosenthal, Laura M. Sanz, Francisco-Javier Gamo, Jayan Joseph, Shivendra Singh, Sridevi Bashyam, Jean Michel Augereau, Elie Giraud, Tanguy Bozec, Thierry Vermat, Gilles Tuffal, Jean-Michel Guillon, Jérôme Menegotto, Laurent Sallé, Guillaume Louit, Marie-José Cabanis, Marie Françoise Nicolas, Michel Doubovetzky, Rita Merino, Nadir Bessila, Iñigo Angulo-Barturen, Delphine Baud, Lidiya Bebrevska, Fanny Escudié, Jacquin C. Niles, Benjamin Blasco, Simon Campbell, Gilles Courtemanche, Laurent Fraisse, Alain Pellet, David A. Fidock, Didier Leroy Jul 2021

The Antimalarial Mmv688533 Provides Potential For Single-Dose Cures With A High Barrier To, James M. Murithi, Cécile Pascal, Jade Bath, Xavier Boulenc, Nina F. Gnädig, Charisse Flerida A. Pasaje, Kelly Rubiano, Tomas Yeo, Sachel Mok, Sylvie Klieber, Paul Desert, María Belén Jiménez-Díaz, Jutta Marfurt, Mélanie Rouillier, Mohammed H. Cherkaoui-Rbati, Nathalie Gobeau, Sergio Wittlin, Anne-Catrin Uhlemann, Ric N. Price, Grennady Wirjanata, Rintis Noviyanti, Patrick Tumwebaze, Roland A. Cooper, Philip J. Rosenthal, Laura M. Sanz, Francisco-Javier Gamo, Jayan Joseph, Shivendra Singh, Sridevi Bashyam, Jean Michel Augereau, Elie Giraud, Tanguy Bozec, Thierry Vermat, Gilles Tuffal, Jean-Michel Guillon, Jérôme Menegotto, Laurent Sallé, Guillaume Louit, Marie-José Cabanis, Marie Françoise Nicolas, Michel Doubovetzky, Rita Merino, Nadir Bessila, Iñigo Angulo-Barturen, Delphine Baud, Lidiya Bebrevska, Fanny Escudié, Jacquin C. Niles, Benjamin Blasco, Simon Campbell, Gilles Courtemanche, Laurent Fraisse, Alain Pellet, David A. Fidock, Didier Leroy

Natural Sciences and Mathematics | Faculty Scholarship

The emergence and spread of Plasmodium falciparum resistance to first-line antimalarials creates an imperative to identify and develop potent preclinical candidates with distinct modes of action. Here, we report the identification of MMV688533, an acylguanidine that was developed following a whole-cell screen with compounds known to hit high-value targets in human cells. MMV688533 displays fast parasite clearance in vitro and is not cross-resistant with known antimalarials. In a P. falciparum NSG mouse model, MMV688533 displays a long-lasting pharmacokinetic profile and excellent safety. Selection studies reveal a low propensity for resistance, with modest loss of potency mediated by point mutations in …


Seroprevalence Of Hepatitis B Virus Infection, Anti-Hcv Antibodies And Hiv And Knowledge Among People Who Use Drugs Attending Methadone Therapy Clinic In Tanzania; A Cross-Sectional Study, Semvua B. Kilonzo, Daniel L W Gunda, David C. Majinge, Hyasinta Jaka, Paulina M. Manyiri, Fredrick Kalokola, Grahame Mtui, Elichilia R. Shao, Fatma Bakshi, Alex Stephano Jul 2021

Seroprevalence Of Hepatitis B Virus Infection, Anti-Hcv Antibodies And Hiv And Knowledge Among People Who Use Drugs Attending Methadone Therapy Clinic In Tanzania; A Cross-Sectional Study, Semvua B. Kilonzo, Daniel L W Gunda, David C. Majinge, Hyasinta Jaka, Paulina M. Manyiri, Fredrick Kalokola, Grahame Mtui, Elichilia R. Shao, Fatma Bakshi, Alex Stephano

Faculty of Health Sciences, East Africa

Background

Methadone therapy clinics have been recently introduced in Tanzania, aiming at reducing risk behaviors and infection rates of viral hepatitis and HIV among people who use drugs. The objective of this study was to estimate the prevalence, associated factors and knowledge level of these conditions among people who use drugs attending a methadone clinic in Tanzania.

Methods

We enrolled 253 People who using drugs receiving Methadone therapy. Clinical data was retrospectively collected from the medical records and face-to face interviews were conducted to determine the behavioral risk factors and respondents’ knowledge on viral hepatitis and HIV.

Results

An overall …


Pediatric Sepsis-Development Of A Clinical Pathway For The Pediatric Emergency Department, Roslyn Lampkin-Smiley Jul 2021

Pediatric Sepsis-Development Of A Clinical Pathway For The Pediatric Emergency Department, Roslyn Lampkin-Smiley

Student Scholarly Projects

Globally, various researchers have suggested that sepsis is one of the most prominent causes of infant fatalities. Since 2004, countless guidelines have been developed to assist in the early identification and management of sepsis. The PICOT question that guided this project was: Does the implementation of a pediatric sepsis clinical pathway, compared with the standard protocol in emergency departments, decrease delays in treatment times of patients presenting with sepsis? Researchers have suggested that early recognition and interventions for septic patients can result in decreased mortality rates. A pediatric sepsis clinical pathway was implemented during this project. The pathway alerted staff …


"Divide, Divert, & Conquer” Deconstructing The Presidential Framing Of White Supremacy In The Covid-19 Era, Vivian Louie, Anahi Viladrich Jul 2021

"Divide, Divert, & Conquer” Deconstructing The Presidential Framing Of White Supremacy In The Covid-19 Era, Vivian Louie, Anahi Viladrich

Publications and Research

Based on the analysis of President Donald J. Trump’s social media, along with excerpts from his speeches and press releases, this study sheds light on the framing of white supremacy during the first months of the COVID-19 pandemic in the United States. Our findings reveal that the triad of divide, divert, and conquer was crucial to Trump’s communications strategy. We argue that racist nativism—or racialized national threats to American security—is key to comprehending the external divisiveness in this strategy. When Trump bitterly cast China as the cause of America’s pandemic fallout and Mexico as the source of other key American …


Levels Of Trust In Information Sources As A Predictor Of Protective Health Behaviors During Covid-19 Pandemic: A Uae Cross-Sectional Study, Maria J. Figueiras, Jihane Ghorayeb, Mariana V. C. Coutinho, João Marôco, Justin Thomas Jul 2021

Levels Of Trust In Information Sources As A Predictor Of Protective Health Behaviors During Covid-19 Pandemic: A Uae Cross-Sectional Study, Maria J. Figueiras, Jihane Ghorayeb, Mariana V. C. Coutinho, João Marôco, Justin Thomas

All Works

Health information sources and the level of trust in a particular source may influence the subsequent adoption of advocated health behaviors. Information source preference and levels of trust are also likely to be influenced by sociodemographic (culture, age, gender) variables. Understanding these source-trust-behavior relationships across various national and cultural contexts is integral to improved health messaging. The present study identified the sources most frequently consulted to obtain information about COVID-19 during the pandemic's early stages in the United Arab Emirates (UAE). The study quantified levels of trust across an array of information sources, factoring in sociodemographic variables. Finally, the study …


2021-07-20_Michiganoverview_Covidsymptoms, Michigan Department Of Health & Human Services Jul 2021

2021-07-20_Michiganoverview_Covidsymptoms, Michigan Department Of Health & Human Services

Michigan COVID-19 Syndromic Surveillance System Data

The Syndromic Surveillance System Data report was obtained from Michigan's COVID-19 dashboard, from under the link "​Coronavirus Symptoms": https://www.michigan.gov/coronavirus. Data was compiled by the Michigan Department of Health and Human Services (MDHHS). The information was updated twice a week on Tuesdays and Fridays.

Syndromic Surveillance System data is obtained from approximately 183 facilities participating in syndromic surveillance (132 Emergency Departments (ED), 51 Urgent Cares) across the State of Michigan. The reporting is based on individuals who present at EDs and may not be representative of the overall population. The coronavirus-like symptoms query searches visit free-text (chief complaint, triage notes, …


From Strategy Consulting Research To Science Of Think Tank, Xin Wang, Huiqin Zhang, Changpu Sun Jul 2021

From Strategy Consulting Research To Science Of Think Tank, Xin Wang, Huiqin Zhang, Changpu Sun

Bulletin of Chinese Academy of Sciences (Chinese Version)

Think tank researches are the main element to advance the modernization of China's capacity for governance, and they are multidisciplinary related to many research areas. The suggestions of think tank researches may have massive influences as long as they are adapted. In this study, we recommend that the think tank researches should be advanced to the science of think tank. The think tank researches should follow the widely recognized scientific research character-falsifiability. Based on solid data and evidences, think tank researches build objective models, develop qualitative methods and quantitative tools, and generate objective strategic consulting proposals with predictive ability. By …


Data Information: Hot Research Topic Of Scopus Research Papers In Jan. 1, 2018 To Jun. 23, 2021 Jul 2021

Data Information: Hot Research Topic Of Scopus Research Papers In Jan. 1, 2018 To Jun. 23, 2021

Bulletin of Chinese Academy of Sciences (Chinese Version)

No abstract provided.


Tick Saliva And The Alpha-Gal Syndrome: Finding A Needle In A Haystack, Surendra Raj Sharma, Shahid Karim Jul 2021

Tick Saliva And The Alpha-Gal Syndrome: Finding A Needle In A Haystack, Surendra Raj Sharma, Shahid Karim

Faculty Publications

Ticks and tick-borne diseases are significant public health concerns. Bioactive molecules in tick saliva facilitate prolonged blood-feeding and transmission of tick-borne pathogens to the vertebrate host. Alpha-gal syndrome (AGS), a newly reported food allergy, is believed to be induced by saliva proteins decorated with a sugar molecule, the oligosaccharide galactose-⍺-1,3-galactose (α-gal). This syndrome is characterized by an IgE antibody-directed hypersensitivity against α-gal. The α-gal antigen was discovered in the salivary glands and saliva of various tick species including, the Lone Star tick (Amblyomma americanum). The underlying immune mechanisms linking tick bites with α-gal-specific IgE production are poorly understood and are …


Covid-19 Newsletter (Vol. 81), Center For Disaster Medicine, New York Medical College Jul 2021

Covid-19 Newsletter (Vol. 81), Center For Disaster Medicine, New York Medical College

COVID-19 Newsletter

No abstract provided.


Transmission Process Prediction Of Novel Coronavirus Based On System Dynamics, Xuepeng Lu, Shang Jiao, Junhui Zhao, Lulu Lü, Zhou Li Jul 2021

Transmission Process Prediction Of Novel Coronavirus Based On System Dynamics, Xuepeng Lu, Shang Jiao, Junhui Zhao, Lulu Lü, Zhou Li

Journal of System Simulation

Abstract: The transmission characteristics of novel coronavirus is considered and a new SE4IR2 model based on the principle of system dynamics is proposed. The US epidemic data from June to November is used to set the isolation rate and other parameters, and the SE4IR2 model is used to fit, analyze and predict the development of the epidemic trend in the next stage. The empirical part uses the data from June to November in the United States to achieve the parameters of the SE4IR2 model, obtains the parameter values in December and January through the time series prediction model, and compares …


Structural And Biochemical Characterization Of The Flavin-Dependent Siderophore-Interacting Protein From Acinetobacter Baumannii, Hannah Valentino, David A. Korasick, Tabbetha J. Bohac, Justin A. Shapiro, Timothy A. Wencewicz, John J. Tanner, Pablo Sobrado Jul 2021

Structural And Biochemical Characterization Of The Flavin-Dependent Siderophore-Interacting Protein From Acinetobacter Baumannii, Hannah Valentino, David A. Korasick, Tabbetha J. Bohac, Justin A. Shapiro, Timothy A. Wencewicz, John J. Tanner, Pablo Sobrado

Chemistry Faculty Research & Creative Works

Acinetobacter baumannii is an opportunistic pathogen with a high mortality rate due to multi-drug-resistant strains. The synthesis and uptake of the iron-chelating siderophores acinetobactin (Acb) and preacinetobactin (pre-Acb) have been shown to be essential for virulence. Here, we report the kinetic and structural characterization of BauF, a flavin-dependent siderophore-interacting protein (SIP) required for the reduction of Fe (III) bound to Acb/pre-Acb and release of Fe(II). Stopped-flow spectrophotometric studies of the reductive half-reaction show that BauF forms a stable neutral flavin semiquinone intermediate. Reduction with NAD(P)H is very slow (kobs, 0.001 s-1) and commensurate with the rate of reduction by photobleaching, …


Developing Pandemic Comics For Youth Audiences, Judy Diamond, Amy Spiegel, Patricia Wonch Hill, Elizabeth Vanwormer, Judi M. Gaiashkibos, Bob Hall, Aaron Sutherlen, Julia Mcquillan Jul 2021

Developing Pandemic Comics For Youth Audiences, Judy Diamond, Amy Spiegel, Patricia Wonch Hill, Elizabeth Vanwormer, Judi M. Gaiashkibos, Bob Hall, Aaron Sutherlen, Julia Mcquillan

University of Nebraska State Museum: Staff and Affiliates, Publications

In spring 2020 our team received funding from the Rapid Response Research program of the National Science Foundation to develop comics that would help youth understand the COVID-19 pandemic. Our project built on a decade of expertise creating comics about the biology of viruses. In collaboration with virologists and artists, we developed three comic stories about COVID-19 during the pandemic and posted them on-line during the last half of 2020. The fictional narratives address fundamental issues in biology, virology, and network science, in order to help readers understand the complexities of living through a viral pandemic. The stories focus on …


Government As The First Investor In Biopharmaceutical Innovation: Evidence From New Drug Approvals 2010–2019, Ekaterina Galkina Cleary, Matthew J. Jackson, Fred D. Ledley Jul 2021

Government As The First Investor In Biopharmaceutical Innovation: Evidence From New Drug Approvals 2010–2019, Ekaterina Galkina Cleary, Matthew J. Jackson, Fred D. Ledley

Natural & Applied Sciences Faculty Publications

The discovery and development of new medicines classically involves a linear process of basic biomedical research to uncover potential targets for drug action, followed by applied, or translational, research to identify candidate products and establish their effectiveness and safety.

This Working Paper describes the public sector contribution to that process by tracing funding from the National Institutes of Health (NIH) related to published research on each of the 356 new drugs approved by the U.S. Food and Drug Administration from 2010-2019 as well as research on their 218 biological targets.


Overcoming Obstacles In Protein Expression In The Yeast Pichia Pastoris: Interviews Of Leaders In The Pichia Field, Zoe Ingram, Abha Patkar, Dahoon Oh, Kevin K. Zhang, Christina Chung, Joan Lin-Cereghino, Geoff P. Lin-Cereghino Jul 2021

Overcoming Obstacles In Protein Expression In The Yeast Pichia Pastoris: Interviews Of Leaders In The Pichia Field, Zoe Ingram, Abha Patkar, Dahoon Oh, Kevin K. Zhang, Christina Chung, Joan Lin-Cereghino, Geoff P. Lin-Cereghino

Pacific Journal of Health

The yeast Pichia pastoris (also known as Komagataella pastoris) has been used for over 30 years to produce thousands of valuable, heterologous proteins, such as insulin to treat diabetes and antibodies to prevent migraine headaches. Despite its success, there are some common, stubborn problems encountered by research scientists when they try to use the yeast to produce their recombinant proteins. In order to provide those working in this field with strategies to overcome these common obstacles, nine experts in P. pastoris protein expression field were interviewed to create a written review and video (https://www.youtube.com/watch?v=FyC9xXVLyD0). This review describes …


Measuring Global Multi-Scale Place Connectivity Using Geotagged Social Media Data, Zhenlong Li, Xiao Huang, Xinyue Ye, Yuqin Jiang, Yago Martin, Huan Ning, Michael E. Hodgson, Xiaoming Li Jul 2021

Measuring Global Multi-Scale Place Connectivity Using Geotagged Social Media Data, Zhenlong Li, Xiao Huang, Xinyue Ye, Yuqin Jiang, Yago Martin, Huan Ning, Michael E. Hodgson, Xiaoming Li

Faculty Publications

Shaped by human movement, place connectivity is quantified by the strength of spatial interactions among locations. For decades, spatial scientists have researched place connectivity, applications, and metrics. The growing popularity of social media provides a new data stream where spatial social interaction measures are largely devoid of privacy issues, easily assessable, and harmonized. In this study, we introduced a global multi-scale place connectivity index (PCI) based on spatial interactions among places revealed by geotagged tweets as a spatiotemporal-continuous and easy-to-implement measurement. The multi-scale PCI, demonstrated at the US county level, exhibits a strong positive association with SafeGraph population movement records …


Measuring Global Multi-Scale Place Connectivity Using Geotagged Social Media Data, Zhenlong Li, Xiao Huang, Yuqin Jiang, Yago Martin, Huan Ning, Michael E. Hodgson, Xiaoming Li Jul 2021

Measuring Global Multi-Scale Place Connectivity Using Geotagged Social Media Data, Zhenlong Li, Xiao Huang, Yuqin Jiang, Yago Martin, Huan Ning, Michael E. Hodgson, Xiaoming Li

Faculty Publications

Shaped by human movement, place connectivity is quantified by the strength of spatial interactions among locations. For decades, spatial scientists have researched place connectivity, applications, and metrics. The growing popularity of social media provides a new data stream where spatial social interaction measures are largely devoid of privacy issues, easily assessable, and harmonized. In this study, we introduced a global multi-scale place connectivity index (PCI) based on spatial interactions among places revealed by geotagged tweets as a spatiotemporal-continuous and easy-to-implement measurement. The multi-scale PCI, demonstrated at the US county level, exhibits a strong positive association with SafeGraph population movement records …


Molecular Diagnosis Of Sars-Cov-2: Assessing And Interpreting Nucleic Acid And Antigen Tests, Peter A. Zimmerman, Christopher L. King, Mahmoud Ghannoum, Robert A. Bonomo, Gary W. Procop Jul 2021

Molecular Diagnosis Of Sars-Cov-2: Assessing And Interpreting Nucleic Acid And Antigen Tests, Peter A. Zimmerman, Christopher L. King, Mahmoud Ghannoum, Robert A. Bonomo, Gary W. Procop

Faculty Scholarship

In this review, we summarize the current status of nucleic acid and antigen testing required for diagnosing SARS-CoV-2 infection and COVID-19 disease. Nucleic acid amplification (NAAT) and antigen-detection (Ag) tests occupy a critically important frontline of defense against SARS-CoV-2 in clinical and public health settings. In early stages of this outbreak, we observed that identifying the causative agent of a new illness of unknown origin was greatly accelerated by characterizing the nucleic acid signature of the novel coronavirus. Results from nucleic acid sequencing led to the development of highly sensitive RT-PCR testing for use in clinical settings and to informing …


Do Psychiatric Diseases Follow Annual Cyclic Seasonality?, Hanxin Zhang, Atif Khan, Henrik Larsson, Andrey Rzhetsky Jul 2021

Do Psychiatric Diseases Follow Annual Cyclic Seasonality?, Hanxin Zhang, Atif Khan, Henrik Larsson, Andrey Rzhetsky

Student Publications

Seasonal affective disorder (SAD) famously follows annual cycles, with incidence elevation in the fall and spring. Should some version of cyclic annual pattern be expected from other psychiatric disorders? Would annual cycles be similar for distinct psychiatric conditions? This study probes these questions using 2 very large datasets describing the health histories of 150 million unique U.S. citizens and the entire Swedish population. We performed 2 types of analysis, using "uncorrected" and "corrected" observations. The former analysis focused on counts of daily patient visits associated with each disease. The latter analysis instead looked at the proportion of disease-specific visits within …


An Improved Earned Value Management Method Integrating Quality And Safety, Brian Briggs Jul 2021

An Improved Earned Value Management Method Integrating Quality And Safety, Brian Briggs

LSU Doctoral Dissertations

The construction industry invests significant time and money to improve quality and safety while reducing cost and schedule impacts. The industry has a sincere desire to improve construction project management methods to improve efficiency. Historically, quality and safety underperformances result from undermanaged quality control and safety activities. The cost and schedule impacts associated with poor quality work have always had an impact on construction operations. The unprecedented challenges and uncertainties of COVID-19 highlighted the need to improve the Earned Value Management (EVM) method within construction to reflect these quality and safety activities. The central goal of this dissertation is to …


Covid-19 Mortality Prediction Using Machine Learning-Integrated Random Forest Algorithm Under Varying Patient Frailty, Erwin Cornelius Jul 2021

Covid-19 Mortality Prediction Using Machine Learning-Integrated Random Forest Algorithm Under Varying Patient Frailty, Erwin Cornelius

Theses and Dissertations

The abundance of type and quantity of available data in the healthcare field has led many to utilize machine learning approaches to keep up with this influx of data. Data pertaining to COVID-19 is an area of recent interest. The widespread influence of the virus across the United States creates an obvious need to identify groups of individuals that are at an increased risk of mortality from the virus. We propose a so-called clustered random forest approach to predict COVID-19 patient mortality. We use this approach to examine the hidden heterogeneity of patient frailty by examining demographic information for COVID-19 …


Preprints In Times Of Covid19: The Time Is Ripe For Agreeing On Terminology And Good Practices, Raffaella Ravinetto, Céline Caillet, Muhammad H. Zaman, Jerome Amir Singh, Philippe J. Guerin, Aasim Ahmad, Carlos E. Durán, Amar Jesani, Ana Palmero, Laura Merson Jul 2021

Preprints In Times Of Covid19: The Time Is Ripe For Agreeing On Terminology And Good Practices, Raffaella Ravinetto, Céline Caillet, Muhammad H. Zaman, Jerome Amir Singh, Philippe J. Guerin, Aasim Ahmad, Carlos E. Durán, Amar Jesani, Ana Palmero, Laura Merson

Section of Nephrology

Over recent years, the research community has been increasingly using preprint servers to share manuscripts that are not yet peer-reviewed. Even if it enables quick dissemination of research findings, this practice raises several challenges in publication ethics and integrity. In particular, preprints have become an important source of information for stakeholders interested in COVID19 research developments, including traditional media, social media, and policy makers. Despite caveats about their nature, many users can still confuse pre-prints with peer-reviewed manuscripts. If unconfirmed but already widely shared first-draft results later prove wrong or misinterpreted, it can be very difficult to "unlearn" what we …


Risk Of Infection And Transmission Of Sars-Cov-2 Among Children And Adolescents In Households, Communities And Educational Settings: A Systematic Review And Meta-Analysis, Omar Irfan, Jiang Li, Kun Tang, Zhicheng Wang, Zulfiqar Ahmed Bhutta Jul 2021

Risk Of Infection And Transmission Of Sars-Cov-2 Among Children And Adolescents In Households, Communities And Educational Settings: A Systematic Review And Meta-Analysis, Omar Irfan, Jiang Li, Kun Tang, Zhicheng Wang, Zulfiqar Ahmed Bhutta

Woman and Child Health

Background: There is uncertainty with respect to SARS-CoV-2 transmission in children (0-19 years) with controversy on effectiveness of school-closures in controlling the pandemic. It is of equal importance to evaluate the risk of transmission in children who are often asymptomatic or mildly symptomatic carriers that may incidentally transmit SARS-CoV-2 in different settings. We conducted this review to assess transmission and risks for SARS-CoV-2 in children (by age-groups or grades) in community and educational-settings compared to adults.
Methods: Data for the review were retrieved from PubMed, EMBASE, Cochrane Library, WHO COVID-19 Database, China National Knowledge Infrastructure (CNKI) Database, WanFang Database, Latin …


Examining Intraindividual Variability As A Predictor Of Cognitive And Functional Decline In Older Adulthood, Alyssa N. De Vito Jul 2021

Examining Intraindividual Variability As A Predictor Of Cognitive And Functional Decline In Older Adulthood, Alyssa N. De Vito

LSU Doctoral Dissertations

Intraindividual variability (IIV) has recently emerged as a promising early indicator of future cognitive decline (Haynes et al., 2017). However, the literature is currently limited in that the majority of studies have only examined IIV in one cognitive domain: reaction time. Explorations into the relationship between IIV and functional status are also sparse, with only one recent study exploring this relationship (Schmitter-Edgecombe et al., 2020). The present study aimed to address gaps in the literature by examining IIV in differing cognitive domains to determine which measure(s) were the best predictors of cognitive and functional status at baseline as well as …


The Clinical Sustainability Assessment Tool: Measuring Organizational Capacity To Promote Sustainability In Healthcare, Sara Malone, Kim Prewitt, Rachel Hackett, John C Lin, Virginia Mckay, Callie Walsh-Bailey, Douglas A Luke Jul 2021

The Clinical Sustainability Assessment Tool: Measuring Organizational Capacity To Promote Sustainability In Healthcare, Sara Malone, Kim Prewitt, Rachel Hackett, John C Lin, Virginia Mckay, Callie Walsh-Bailey, Douglas A Luke

2020-Current year OA Pubs

BACKGROUND: Few validated assessment tools are available to increase understanding and measure factors associated with sustainment of clinical practices, an increasingly recognized need among clinicians. We describe the development of the Clinical Sustainability Assessment Tool (CSAT), designed to assess factors that contribute to sustainable practices in clinical settings.

METHODS: Sixty-four participants from clinical and research fields participated in concept mapping and were recruited to brainstorm factors that lead to sustained clinical practices. Once repeated factors were removed, participants sorted items based on similarity and rated them by importance and feasibility. Using concept mapping analyses, items were grouped into meaningful domains …


Gimme A Break: The Patent Term Restoration Act Should Give Environmental Innovators A Chance To Catch A (Cleaner) Breath, Gabrielle Gravel Jul 2021

Gimme A Break: The Patent Term Restoration Act Should Give Environmental Innovators A Chance To Catch A (Cleaner) Breath, Gabrielle Gravel

Journal of Intellectual Property Law

There is an abundance of frightening data painting a grim picture of Earth’s future. Humans have undoubtedly left a carbon footprint so deep, it will take drastic measures to undo our damage. To continue enjoying life as we know it, we humans must shift our focus to the powerful minds of creators and engineers to find ways to untangle our manmade webs. To generate interest and attract the best and brightest to do the challenging and time-consuming work of environmental inventions, the first step is to provide a greater incentive. This note calls upon the U.S. Patent and Trademark Office …