Digital Commons Network^™

Fact Or Myth: The Flu Can Be Caused By The Flu Vaccine, Arleigh Wood

Virtual 2020 Spring Student Showcase for Research and Creative Inquiry

To many, the flu vaccine seems like a threat to an otherwise healthy individual. People often get the flu after receiving the flu shot, which does not promote confidence in the general public. These and other reasonings have created a myth that the flu vaccine can cause the flu. Understanding how the vaccination is created and how it interacts with the immune system helps to realize why the flu vaccine cannot cause the virus. For the vaccine to work, adaptive immunity must be activated by the introduction of the viral particles in a safe manner. An effective immune response from …

Vaccines In Current Culture: The Hpv Vaccine Controversy, Alyssa Johnston

Senior Honors Theses

The use of vaccinations has drastically decreased mortality and morbidity rates related to infectious disease and has become an intrinsic part of modern health care. However, the fear of risks related to vaccines has been partially responsible for the decisions of many parents to delay or avoid vaccinating their children. The human papilloma virus (HPV) vaccine specifically is one of the most controversial vaccines in current culture due to reports of new onset or exacerbation of autoimmune diseases, infertility, and even death following its administration. This review synthesizes information regarding the relevance and safety of the HPV vaccine, as well …

484— Modeling Social Distancing Methods And Their Effectiveness In Combating The Spread Of Ebola, Rachel Fair

GREAT Day Posters

Ebola Virus Disease (EVD) is a rare but severe disease that is transmitted among humans through direct-contact with, and close proximity to, infected bodily fluids. From 2014-16, West Africa experienced the largest Ebola outbreak ever recorded, infecting over 28,000 people, and killing over 11,000. Although the symptoms of EVD are treatable, the disease can be extremely deadly, with an average of 50% EVD cases resulting in fatality. In areas where healthcare is scarce and vaccinations are not readily available, the practices of social distancing and self-quarantining have been shown to be highly effective in combating the spread of EVD. To …

465— Modeling Vaccine Efficacy For Tuberculosis In A Prison Population, Kaitlyn Mundackal

GREAT Day Posters

Tuberculosis is a highly contagious disease and is particularly problematic in confined communities such as prisons. I simulated how Tuberculosis moves through a prison population and tested how much vaccination effort is needed to control its spread. To explore this, I tested adding ever increasing numbers of randomly placed edges in a network and determined the size of the largest component. Afterwards, I removed edges in the model using two different methods, one illustrating if the edges were removed randomly and the other starting with prisoners that had the most connections, to simulate the effect of vaccination. My results show …

A Study Of Cholera Transmission, Urmi Ghosh-Dastidar

Open Educational Resources

A recent cholera outbreak in Haiti brought public attention to this disease. Cholera, a diarrheal disease, is caused by an intestinal bacterium, and if not addressed in a timely manner may become fatal. During the project described here, the students will learn how to solve and address a practical problem such as cholera transmission using various mathematical tools. Students will learn to develop a differential equation model based on practical scenarios, analyze the model using mathematics as well as numerical simulation, and finally describe the results in words that are understandable by the people who are not specialists in this …

Combating Sars-Cov-2: Leveraging Microbicidal Experiences With Other Emerging/Re-Emerging Viruses, M. Khalid Ijaz, Syed A. Sattar, Joseph R. Rubino, Raymond W. Nims, Charles P. Gerba

Publications and Research

The emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in Wuhan City, China, late in December 2019 is another example of an emerging zoonotic virus that threatens public health and international travel and commerce. When such a virus emerges, there is often insufficient specific information available on mechanisms of virus dissemination from animal to human or from person to person, on the level or route of infection transmissibility or of viral release in body secretions/excretions, and on the survival of virus in aerosols or on surfaces. The effectiveness of available virucidal agents and hygiene practices as interventions for disrupting …

The Role Of Diet In The Onset Of Depression: A Biochemical Connection Between Nutrition And Mental Health, Katlin Wildeman

Senior Honors Theses

Depression is a major clinical concern, having a complex onset and the presence of multiple, often unidentifiable causes. Depression affects millions of individuals worldwide, with a high prevalence in regions of the world with a Western-style diet as compared to regions with a Mediterranean diet. A Western-style diet consists of foods high in sugar, fat, and processed meats and grains, whereas the Mediterranean diet contains significantly more vegetables, fruits, lean meats, and whole grains. The link between diet and mental health disorders has implications for individuals of all ages who are hesitant to turn to medication. In addition to presenting …

Evolutionary Ecology Of Host-Parasite Relationships: Role Of Host Ecology, Phylogeny, And Demographics In Shaping Parasite Evolution, Erika Taylor Gendron

Biology ETDs

Host-parasite systems exist across complex and ecologically heterogeneous landscapes, and may occur across taxonomically and ecologically disparate host species. Under these conditions, mechanisms underlying microevolutionary processes (i.e. gene flow, genetic drift) are not always clear, and may be mediated by numerous co-occurring factors specific to individual hosts. Host traits such as host immunology, demographics, phylogeny and ecology may act in concert to shape host-parasite relationships, and ultimately evolutionary processes. The research described herein used phylogeographic, phylogenomic, and population genetic methods to further understanding of how host traits impact the evolutionary ecology of trematode systems, using avian schistosomes (Digenea: Schistosomatidae) as …

Information Mining For Covid-19 Research From A Large Volume Of Scientific Literature, Sabber Ahamed, Manar D. Samad

Computer Science Faculty Research

The year 2020 has seen an unprecedented COVID-19 pandemic due to the outbreak of a novel strain of coronavirus in 180 countries. In a desperate effort to discover new drugs and vaccines for COVID-19, many scientists are working around the clock. Their valuable time and effort may benefit from computer-based mining of a large volume of health science literature that is a treasure trove of information. In this paper, we have developed a graph-based model using abstracts of 10,683 scientific articles to find key information on three topics: transmission, drug types, and genome research related to coronavirus. A subgraph is …

Coronavirus Disease 2019 (Covid-19), Matthew Dunbar

Pharmacy Student Scholarship

No abstract provided.

The Domestic And Global Implications Of Considering Non-Us Origin A Risk Factor For Tuberculosis In The United States, Emma Gile 20

Honor Scholar Theses

No abstract provided.

The Usefulness Of The Left Atrial Dilation Rate In Determining Severity Of Heart Failure, Laura B. Snyder

Senior Theses

Hypertension and vascular stiffness are two physiological conditions that strain the left ventricle (LV) and cause it to gain muscle mass. Eventually, the LV is unable to fill correctly and the patient develops Heart Failure with a preserved Ejection Fraction (HFpEF). Clinically, a patient’s left atrium (LA) area is measured as a diagnostic parameter of HFpEF severity. However, this doesn’t offer a prognosis or threshold of LA size necessitating hospitalization because of variation in patient demographics, genetics, and lifestyle which affect rates of HFpEF progression.

Since there are no medications or effective treatment options for HFpEF patients, there is a …

Potency And Breadth Of Human Primary Zikv Immune Sera Shows That Zika Viruses Cluster Antigenically As A Single Serotype, Chad M. Nix, Jonathan Salberg, Felicity J. Coulter, Bettie W. Kareko, Zoe L. Lyski, Brian L. Booty, William B. Messer

OHSU-PSU School of Public Health Faculty Publications and Presentations

The recent emergence of Zika virus as an important human pathogen has raised questions about the durability and breadth of Zika virus immunity following natural infection in humans. While global epidemic patterns suggest that Zika infection elicits a protective immune response that is likely to offer long-term protection against repeat infection by other Zika viruses, only one study to date has formally examined the ability of human Zika immune sera to neutralize different Zika viruses. That study was limited because it evaluated human immune sera no more than 13 weeks after Zika virus infection and tested a relatively small number …

Association Between Sulfur-Metabolizing Bacterial Communities In Stool And Risk Of Distal Colorectal Cancer In Men, Long H. Nguyen, Wenjie Ma, Dong D. Wang, Yin Cao, Himel Mallick, Teklu K. Gerbaba, Jason Lloyd-Price, Galeb Abu-Ali, A. Brantley Hall, Daniel Sikavi, David A. Drew, Raaj S. Mehta, Cesar Arze, Amit D. Joshi, Yan Yan, Tobyn Branck, Casey Dulong, Kerry L. Ivey, Shuji Ogino, Eric B. Rimm, Mingyang Song, Wendy S. Garrett, Jacques Izard, Cutis Huttenhower, Andrew T. Chan

Department of Food Science and Technology: Faculty Publications

Background and aims: Sulfur-metabolizing microbes, which convert dietary sources of sulfur into genotoxic hydrogen sulfide (H₂S), have been associated with development of colorectal cancer (CRC). We identified a dietary pattern associated with sulfur-metabolizing bacteria in stool and then investigated its association with risk of incident CRC using data from a large prospective study of men.

Methods: We collected data from 51,529 men enrolled in the Health Professionals Follow-up Study since 1986 to determine the association between sulfur-metabolizing bacteria in stool and risk of CRC over 26 years of follow-up. First, in a subcohort of 307 healthy men, we …

The Current State Of Migrant Health In Morocco: Pre-And Peri-Covid-19 Pandemic, Layla Babahaji

Independent Study Project (ISP) Collection

In the early 21st century, Morocco transitioned from being a predominantly transit migration country into both a transit and destination country for migrants. In 2013, the Moroccan government took significant steps to adapt the healthcare system in better integrating migrants in its policies. The government implemented the National Strategy on Immigration and Asylum that improved access to public health care for migrants. Recently, in March of 2020, Morocco declared a state of medical emergency due to the current COVID-19 pandemic that continues today. This paper addresses the effects of the COVID-19 pandemic on the current state of migrant health in …

Evidence Of The Covid-19 Virus Targeting The Cns: Tissue Distribution, Host-Virus Interaction, And Proposed Neurotropic Mechanisms, Abdul Mannan Baig, Areeba Khaleeq, Usman Ali, Hira Syeda

Department of Biological & Biomedical Sciences

The recent outbreak of coronavirus infectious disease 2019 (COVID-19) has gripped the world with apprehension and has evoked a scare of epic proportion regarding its potential to spread and infect humans worldwide. As we are in the midst of an ongoing pandemic of COVID-19, scientists are struggling to understand how it resembles and differs from the severe acute respiratory syndrome coronavirus (SARS-CoV) at the genomic and transcriptomic level. In a short time following the outbreak, it has been shown that, similar to SARS-CoV, COVID-19 virus exploits the angiotensin-converting enzyme 2 (ACE2) receptor to gain entry inside the cells. This finding …

Paediatric Respiratory Isolation: A Challenge For A Secondary Care Hospital! A Service Innovation Project, Nadia Mohammad, Shireen Mohammad, Arjumand Sohaila, Syed Mohammad Yousuf, Adnan Khan, Rahila Meghani, Kashif Sajwani, Khalil Ahmad, Ali Faisal Saleem Dr, Pawan Vash

Department of Paediatrics and Child Health

Objective: The aim of this project was to broaden the secondary care hospital's scope of services and provide safe, effective and quality care for the patient presenting with measles.
Methods: Six Sigma DMAIC [define measure, analyze, improve, and control (DMAIC)] methodology was used in this quality improvement project. The quality project was started in October 2015 using a Gantt chart quality tool.
Results: The paediatric team with the support of administration of the hospital has established isolation rooms and devised a policy for the care and management of patient with airborne infection to avoid cross transmission. During six months period …

Provider Attitudes And Practice Patterns For Direct-Acting Antiviral Therapy For Patients With Hepatocellular Carcinoma, Nicole E Rich, Ju Dong Yang, Ponni V Perumalswami, Naim Alkhouri, Whitney Jackson, Neehar D Parikh, Neil Mehta, Reena Salgia, Andres Duarte-Rojo, Laura Kulik, Mina Rakoski, Adnan Said, Omobonike Oloruntoba, George N Ioannou, Maarouf A Hoteit, Andrew M Moon, Amol S Rangnekar, Sheila L Eswaran, Elizabeth Zheng, Janice H Jou, James Hanje, Anjana Pillai, Ruben Hernaez, Robert Wong, Steven Scaglione, Hrishikesh Samant, Devika Kapuria, Shaun Chandna, Russell Rosenblatt, Veeral Ajmera, Catherine T Frenette, Sanjaya K Satapathy, Parvez Mantry, Prasun Jalal, Binu V John, Oren K Fix, Michael Leise, Christina C Lindenmeyer, Avegail Flores, Nayan Patel, Z Gordon Jiang, Nyan Latt, Renumathy Dhanasekaran, Mobolaji Odewole, Sofia Kagan, Jorge A Marrero, Amit G Singal

Faculty, Staff and Students Publications

BACKGROUND & AIMS: Direct-acting antivirals (DAAs) are effective against hepatitis C virus and sustained virologic response is associated with reduced incidence of hepatocellular carcinoma (HCC). However, there is controversy over the use of DAAs in patients with active or treated HCC and uncertainty about optimal management of these patients. We aimed to characterize attitudes and practice patterns of hepatology practitioners in the United States regarding the use of DAAs in patients with HCC.

METHODS: We conducted a survey of hepatology providers at 47 tertiary care centers in 25 states. Surveys were sent to 476 providers and we received 279 responses …

Covid 19 In U.S. Migrant Detention Centers: The Call For Freedom In The Face Of A Global Pandemic, Salma Rojas

Independent Study Project (ISP) Collection

My research paper investigates the responses of the U.S. immigration detention system to the COVID 19 pandemic and determines the capacity of the detention centers to keep detained individuals alive and healthy. As I analyze their capacities, I look to past detention center outbreaks, updated public health resources, reports on ICE facility conditions and the testimonies of migrant people who were detained during the COVID 19 crisis. The urgency of the COVID 19 pandemic is why I dedicate part of my paper to what needs to be done to prevent the situation from worsening. In drawing from these various sources, …

Non-State Actors’ Covid-19 Response In Nepal, Jenna Mae Biedscheid

Independent Study Project (ISP) Collection

This research explores the ways in which non-state actors have responded to the COVID-19 pandemic in Nepal and the needs present in the months before drastic increases in cases began on May 11th. In doing so, it describes how social and political inequality within Nepal has caused people experiencing the most need to be left out of early phases of the COVID-19 pandemic relief effort. This research includes a literature review which situates Nepal amidst the global pandemic as well as interviews with non-state actors currently responding in Nepal. It finds that migrant workers, daily wage earners, Dalits, Janajati/Adivasi peoples, …

Two (Or More) Viruses In One Bat: A Systematic Quantitative Literature Review Of Viral Coinfection In Bats, Eli J. Kaufman

Independent Study Project (ISP) Collection

Viral coinfection is an important topic in pathogen dynamics, and can increase viral shedding and change disease outcomes. As bats are carriers of important zoonoses, such as the SARS coronaviruses, rabies, and other deadly viruses, knowing more about their coinfection dynamics is important. This quantitative systematic literature review sought to show how many papers reported bat viral coinfections, and created three databases. The first database, the SQLR database was based on searches for coinfections. The second database, the Astrovirus database was to determine how much of the literature was being missed by examining a single viral family more in depth …

Global Burden Of Respiratory Infections Associated With Seasonal Influenza In Children Under 5 Years In 2018: A Systematic Review And Modelling Study, Xin Wang, You Li, Katherine L. O'Brien, Qalab Abbas, Syed Asad Ali, Respiratory Virus Global Epidemiology Network, Mohammad Tahir Yousafzai, Zulfiqar Ahmed Bhutta, Sajid Bashir Soofi, Anita K. M. Zaidi

Department of Paediatrics and Child Health

Background: Seasonal influenza virus is a common cause of acute lower respiratory infection (ALRI) in young children. In 2008, we estimated that 20 million influenza-virus-associated ALRI and 1 million influenza-virus-associated severe ALRI occurred in children under 5 years globally. Despite this substantial burden, only a few low-income and middle-income countries have adopted routine influenza vaccination policies for children and, where present, these have achieved only low or unknown levels of vaccine uptake. Moreover, the influenza burden might have changed due to the emergence and circulation of influenza A/H1N1pdm09. We aimed to incorporate new data to update estimates of the global …

Community Of Immunity: A Process Improvement To Increase Influenza Vaccination Uptake, Macy Ball

DNP Projects

Background & Review of Evidence: Annual flu vaccination has been recommended for everyone over the age of six months (National Foundation for Infectious Disease [NFID], 2016). A low flu vaccination rate among college students living in a residential community poses the risk for spreading a highly-contagious respiratory illness caused by the virus. Students have the ability to spread the disease to everyone around them in their dormitories, classrooms, shared restrooms and via social gatherings (NFID, 2016). College students who contract the flu virus experience approximately eight or more days of the illness (NFID, 2016).

Purpose: The purpose of …

Computer Aided Detection Of Tuberculosis On Chest Radiographs: An Evaluation Of The Cad4tb V6 System, Keelin Murphy, Shifa Salman Habib, Syed Mohammad Asad Zaidi, Saira Khowaja, Aamir Khan, Jaime Melendez, Ernst T. Scholten, Farhan Amad, Steven Schalekamp, Maurits Verhagen

Community Health Sciences

There is a growing interest in the automated analysis of chest X-Ray (CXR) as a sensitive and inexpensive means of screening susceptible populations for pulmonary tuberculosis. In this work we evaluate the latest version of CAD4TB, a commercial software platform designed for this purpose. Version 6 of CAD4TB was released in 2018 and is here tested on a fully independent dataset of 5565 CXR images with GeneXpert (Xpert) sputum test results available (854 Xpert positive subjects). A subset of 500 subjects (50% Xpert positive) was reviewed and annotated by 5 expert observers independently to obtain a radiological reference standard. The …

Ideology Affects Trust In Science Agencies During A Pandemic, Lawrence C. Hamilton, Thomas G. Safford

Carsey Publications

In this perspectives brief, authors Lawrence Hamilton and Thomas Safford discuss the importance of government and public respect for scientific advice in mitigating the impacts of COVID-19. Striking political divisions in attitudes toward science have recently been evident in U.S. government statements and actions regarding the pandemic, and in opinions or behavior reported by general-public surveys. Although the COVID-19 crisis is breaking news, these political divisions in respect for science during a pandemic have deeper roots. A nationwide survey conducted by Carsey School researchers in 2016, immediately after the elections, found 25-point gaps between Trump and Clinton voters, or between …

Traditional Funeral And Burial Rituals And Ebola Outbreaks In West Africa: A Narrative Review Of Causes And Strategy Interventions, Chulwoo Park

Faculty Publications

Introduction: In West Africa, traditional funerals and burials have proven main contributors to the spread of infectious diseases, such as Ebola, plague, the Marburg virus, and others. Although the World Health Organization has provided guidelines for the safe burial process after learning of the culture of the afterlife in Ebola-affected areas, little effort has been made to integrate theoretical interventions and models for changing West Africans’ funeral behavior. This research was conducted to study 1) the background of traditional burial rituals, 2) interventions to contain Ebola outbreaks in West Africa, and 3) a strategic approach to future disease outbreak in …

Screening For Hepatitis C Virus Infection In Adolescents And Adults: Updated Evidence Report And Systematic Review For The Us Preventive Services Task Force, Roger Chou, Tracy Dana, Rongwei Fu, Bernadette Zahker, Jesse Wagner, Shaun Ramirez, Sara Grusing, Janice H. Jou

OHSU-PSU School of Public Health Faculty Publications and Presentations

IMPORTANCE: A 2013 review for the US Preventive Services Task Force (USPSTF) of hepatitis C virus (HCV) screening found interferon-based antiviral therapy associated with increased likelihood of sustained virologic response (SVR) and an association between achieving an SVR and improved clinical outcomes. New direct-acting antiviral (DAA) regimens are available.

OBJECTIVE: To update the 2013 review on HCV screening to inform the USPSTF.

DATA SOURCES: Ovid MEDLINE, the Cochrane Central Register of Controlled Trials, and the Cochrane Database of Systematic Reviews through February 2019, with surveillance through September 2019.

STUDY SELECTION: Randomized clinical trials (RCTs) and nonrandomized treatment studies of HCV …

Non-Tuberculous Mycobacterial Infections-A Neglected And Emerging Problem, Imran Ahmed, Simon Tiberi, Joveria Farooqi, Kauser Jabeen, Dorothy Yeboah-Manu, Giovanni Battista Migliori, Rumina Hasan

Department of Pathology and Laboratory Medicine

Non-tuberculous mycobacteria (NTM) are ubiquitous dwellers of environmental niches and are an established cause of natural and nosocomial infections. The incidence of NTM infections is rising owing to a growing population of immunocompromised and vulnerable individuals, complex medical and surgical procedures, as well as increased awareness and diagnostic capabilities. The prevalence of different NTM varies between continents, regions, and countries. The true global burden of pulmonary and extrapulmonary disease is unknown and estimates are subject to under and/or over-estimation. Diagnosis requires confirmation by isolation of NTM along with clinical and radiological criteria, which may be suboptimal at all levels. Susceptibility …

Probable African Tick Bite Fever In The United States, Kami Lowery, Theodore Rosen

Faculty, Staff and Students Publications

African tick bite fever (ATBF) is a tick-borne rickettsial disease most often observed in North American and European tourists returning home from the southern portion of Africa. Ticks infected with Rickettsia africae transmit this parasitic bacterium to humans, who subsequently develop an influenza-like illness, one or more inoculation eschars, and in some cases, a cutaneous rash. Because ATBF often presents with non-specific symptoms that suggest other infectious diseases, establishing the diagnosis may be difficult. Confirmatory assays, including serology and nucleic acid amplification, may take weeks to return and cannot help with acute treatment decisions. We present a case of a …

A Novel Case Of Bacterial Meningitis In A Patient With Loeys-Dietz, Lacey D. Colvin Do, Christy Fagg

Infectious Disease

No abstract provided.