Bacterial Infections and Mycoses Commons^™

The Effect Of Empiric Initiation Of Treatment On Outcomes Among Patients Presenting With Extrapulmonary Mycobacterium Tuberculosis Infection In A Community Hospital Setting, Talha Awwal, Faisal Raja Kh, Hanya Awaba, Waseem Anwar, Jinma Ren, Muhammad Aamir Safdar, Saqib Walayat, John J. Farrell

Journal of Community Hospital Internal Medicine Perspectives

Background: Extrapulmonary tuberculosis (EPTB) accounts for ~20% of Mycobacterium tuberculosis infections in Pakistan. Diagnostic delays are common and may worsen outcomes. We evaluated whether empiric treatment initiation improves outcomes among patients with EPTB at a large public hospital in Islamabad, Pakistan. Methods: Retrospective cohort of consecutive EPTB cases at Pakistan Institute of Medical Sciences (January–June 2016). Patients were categorized as clinically diagnosed (symptoms/radiology) or laboratory-supported (histology, microbiology, or biochemical tests). Standard Directly Observed Therapy Short-course (DOTS) based regimens were used. Outcomes were treatment success, failure, loss to follow-up, and mortality; groups were compared using chi-square testing. Results: Of 317 EPTB …

Standardized Infection Prevention Protocol To Reduce Surgical Site Infections In Pediatric Neurosurgery, Pisey Kareth

Doctor of Nursing Practice (DNP) Scholarly Project

Problem: Surgical site infections (SSIs) are a significant concern in the pediatric neurosurgical patient population and are associated with increased morbidity, longer hospital stays, and increased medical expenses. The absence of a standardized preoperative infection prevention process led to variability in perioperative care practices and infections at the practicum site.

Aim of the Project: The aim of the project was to reduce the incidence of SSIs among pediatric patients undergoing neurosurgical procedures who were initially evaluated in an ambulatory setting.

Review of the Evidence: Evidence supports the implementation of bundled infection prevention strategies as a more effective approach to reducing …

Closing The Gaps: Reforming Maryland Controls On Veterinary Antimicrobial Distribution, Samantha Capaldo, Kerry Mcclaughry

Journal of Food Law & Policy

Antimicrobials have been used in livestock and other food animals in the United States (“U.S.”) since the late 1940s. An antimicrobial is “[a]ny natural, synthetic, or semisynthetic substance that can eradicate or prevent the growth of microbes,” including “[a]ntibacterial, antifungal, antiparasitic, and antiviral medications.” Antimicrobial use in food animals is subject to a complex statutory and regulatory framework at both the state and federal levels. Antimicrobial use in food animals has been widely criticized for contributing to antimicrobial-resistant bacterial infections in humans. In response to this criticism, the U.S. Food and Drug Administration (“FDA”) and several states, including Maryland, have …

Lungs And Beyond: Seizures As Presenting Symptom In A Patient With Mycobacterium Chimaera Infection, Samar Mehyar, Tripti Adhikari, Shweta Kambali, Harneet K. Ghumman, Avneet K. Ghumman, Parul Sud, Mehrshad Fathian Sabet, Elizabeth Mikhail, Sohrab Singh

Journal of Community Hospital Internal Medicine Perspectives

Mycobacterium chimaera is a slow-growing, non-tuberculous mycobacterium (NTM) that belongs to the Mycobacterium avium complex (MAC). It first emerged as a pathogen after being associated with infections in patients who underwent cardiothoracic surgery when patients were getting exposed to heater cooler units, especially those requiring extracorporeal membrane oxygenation (ECMO) or prosthetic valve placement. We report an atypical presentation of M. chimaera infection in a patient with COPD, but no prior history of cardiac surgery or immunosuppression.

Understanding The Immune Responses Of Macrophages And Neutrophils In Synovial Fluid And Post-Operative Joint Environments, Allison Noelle Snyder

Rowan-Virtua Research Day

Periprosthetic joint infections (PJI) are devastating complications of total joint replacement (TJA). Even with aggressive antibiotic treatments, PJI recurrence rates are >17%, and 5-year survival is only 87.3%. Understanding the levels of inflammatory markers and cell types present at different timepoints is crucial in maximizing antimicrobial therapy and preventing adverse outcomes following TJA. This study tests the hypothesis that the synovial fluid environment of PJI induces immunosuppression in human macrophages, thereby hindering their ability to kill bacteria.

Resensitization Of Clinical Isolates Of Mdr-Acinetobacter Baumannii To Antibiotics Using Bacteriophage Therapy, Priyal Gajera, Valerie J. Carabetta

Rowan-Virtua Research Day

Introduction:

Antibiotic resistance poses a major global health threat, particularly with multidrug-resistant (MDR) pathogens such as Acinetobacter baumannii, which exhibits resistance to multiple antibiotic classes, including carbapenems.¹ As conventional treatments become less effective, alternative therapies such as bacteriophage therapy are gaining attention. Bacteriophages offer targeted antibacterial activity and may enhance antibiotic efficacy or resensitize resistant strains. This study investigates the synergistic effects of bacteriophage ΦCO03 combined with antibiotics against MDR A. baumannii.

Methods:

Clinical isolates (M20, M5) of A. baumannii were cultured in LB broth at 37°C. Bacteriophage ΦCO03 was isolated and purified using plaque assays. Synergy between phage …

Resensitization Of Clinical Isolates Of Mdr-Acinetobacter Baumannii To Antibiotics Using Bacteriophage Therapy, Zainab Mubasher, Valerie J. Carabetta

Rowan-Virtua Research Day

Acinetobacter baumannii is a Gram-negative, opportunistic pathogen notorious for causing severe infections in immunocompromised patients, particularly those with prolonged hospitalizations or invasive procedures1. Originally susceptible to many antibiotics in the 1970s, this bacterium has since evolved extensive resistance, making it one of the most challenging members of the ESKAPE group of multidrug-resistant (MDR) pathogens2. Its ability to survive in harsh environments and acquire resistance determinants has led to its classification as a “red alert” pathogen by health authorities worldwide. The increasing prevalence of MDR A. baumannii infections in healthcare settings underscores an urgent need for alternative treatment strategies as conventional …

Quantifying Qtc Prolongation Risk At Scale: Cardiac Safety Implications Of Moxifloxacin-Based Tb Regimens, Wesley Augustus Kim, Nikhila Arcakam, Brandon Velazquez

Rowan-Virtua Research Day

Tuberculosis treatment is undergoing its most significant transformation in decades. In recent years, updated ATS/CDC/ERS/IDSA guidelines introduced a new 4-month drug-susceptible TB regimen that incorporates moxifloxacin as a core component. These landmark guideline shifts mean that moxifloxacin exposure among TB patients globally is set to expand dramatically. This drug replaces the ethambutol component of standard TB regiment commonly associated with optic neuritis as a side effect. Yet there is a critical blind spot: while individual studies have documented moxifloxacin’s QT interval-prolonging effects, no research has modeled what happens when this drug is rolled out to millions of patients who simultaneously …

Case Report: Pott’S Puffy Tumor, A Rare Complication Of Sinusitis, Je Seong Lee, Esai A. Hernandez, James Espinosa, Alan Lucerna

Rowan-Virtua Research Day

We report the case of an 11-year-old female who presented with lethargy and new left upper extremity weakness after a recent Emergency Department visit for fever, rhinorrhea, and head fullness, and was subsequently diagnosed with Pott’s Puffy Tumor(PPT). Pott’s Puffy Tumor is a frontal bone osteomyelitis with an frontal  subperiosteal abscess and represents a rare but potentially life-threatening complication of sinusitis. Prompt imaging and timely clinical intervention are critical, though variable presentations can make diagnosis challenging. This case highlights the importance of early recognition, appropriate imaging, and prompt surgical and antibiotic management given the PPT’s  strong association with intracranial complications. …

Trends And Disparities In Mortality Involving Epilepsy And Aspiration Pneumonia Among Older Adults In The United States, 1999–2020, Pranaya Gade, Jarvish Shah, Daarsh Goradia, Nishant Patel, Jamir Pitton Rissardo Md, Ana Leticia Fornari Caprara Md

Rowan-Virtua Research Day

Introduction: Epilepsy in older adults is frequently complicated by swallowing dysfunction, increasing the risk of aspiration pneumonia. Despite its clinical relevance, national trends and demographic disparities in deaths involving these conditions remain poorly characterized. Methods: We analyzed death certificate data from the CDC WONDER Multiple Cause of Death database (1999–2020) for individuals aged ≥65 years with epilepsy (ICD-10 G40, G41) and aspiration pneumonia (J69) listed as causes. Age-adjusted mortality rates (AAMRs) per 100,000 and annual percentage changes (APCs) with 95% confidence intervals were calculated using Joinpoint Regression. Analyses were stratified by sex, race/ethnicity, census region, and state. Results: From 1999 …

A Stemi That Wasn’T: Staphylococcus Aureus Bacteremia Presenting With Troponin Elevation And Pericardial Involvement, Taqi A. Khan, Kelsey A. Murray, James Espinosa, Alan Lucerna

Rowan-Virtua Research Day

A 75-year-old female presented to the emergency department (ED) with vomiting, weakness, and altered mental status. Initial evaluation revealed a markedly elevated troponin level and an electrocardiogram (ECG) demonstrating diffuse ST-segment depressions with relative ST elevation in lead aVR, prompting activation of a STEMI alert. After cardiology consultation, emergent catheterization was deferred. Computed tomography (CT) imaging demonstrated an anterior mediastinal fluid collection extending toward the pericardial space with a loculated pericardial effusion. Splenic infarctions were also identified. Blood cultures later grew Staphylococcus aureus. The patient was treated with broad-spectrum antibiotics and transferred to a tertiary care center for further management. …

Gram-Negative Infective Endocarditis : A Rare Case Of Escherichia Coli Pulmonic Valve Endocarditis, Caroline Nguyen, Philip Willsie, James Espinosa, Alan Lucerna

Rowan-Virtua Research Day

Infective endocarditis (IE) is most commonly caused by gram-positive organisms, while Escherichia coli accounts for less than 1% of reported cases. Pulmonic valve involvement is particularly rare, representing fewer than 2% of IE cases. We report a case of E. coli infective endocarditis involving the pulmonic valve complicated by spinal epidural abscess and ascending cholangitis in a patient with intravenous drug use. Blood cultures demonstrated persistent E. coli bacteremia, and further evaluation with echocardiography and MRI revealed pulmonic valve vegetations and epidural abscess. This case highlights the importance of evaluating persistent gram-negative bacteremia for infective endocarditis and metastatic infection.

Septic Pulmonary Emboli Revealing Tricuspid Valve Endocarditis In A Patient Presenting With Opioid Withdrawal Symptoms, Dong Shin, Dhara Patel, James Espinosa, Alan Lucerna

Rowan-Virtua Research Day

Septic embolism is a serious complication of systemic infection, most commonly arising from infective endocarditis. In patients with intravenous drug use (IVDU), right-sided endocarditis may lead to septic pulmonary emboli, often presenting with nonspecific or misleading symptoms. A 36-year-old female with recent intravenous fentanyl use presented with presumed opioid withdrawal, along with chest pain, dyspnea, and systemic symptoms. Initial evaluation revealed leukocytosis and bilateral pulmonary nodules on imaging. Computed tomography angiography demonstrated multiple cavitary and non-cavitary nodules consistent with septic pulmonary emboli. Blood cultures grew Staphylococcus aureus, and echocardiography revealed tricuspid valve vegetations with severe regurgitation. The patient required escalation …

Case Report: Acute Encephalopathy Revealing Severe Babesiosis With Lyme Co-Infection, Czarina Gebrelle K. Soriano, James Espinosa, Alan Lucer

Rowan-Virtua Research Day

Acute confusion in older adults is a common emergency department presentation with a broad differential diagnosis. Tick-borne illnesses can cause significant systemic disease and may present with nonspecific neurologic or constitutional symptoms, making early recognition challenging. Babesiosis is a tick-borne parasitic infection transmitted by Ixodes ticks and may occur concurrently with other infections such as Lyme disease, further complicating diagnosis. We present a case of a 67-year-old male who presented with acute confusion and was found to have concurrent babesiosis and Lyme disease. This case highlights the importance of maintaining a high index of suspicion for tick-borne co-infections in patients …

When Venom Isn’T The Only Threat: Roseomonas Mucosa Bacteremia Following A Snake Bite, Cyrus Davati, Kishan Patel, James A. Espinosa Md, Alan Lucerna

Rowan-Virtua Research Day

Snake bites in the ED  overall are rare in the United States. While mortality is low due to modern interventions, the sequelae - including tissue necrosis, digit amputation, and subsequent infection  remain a significant concern.  Here we present the case of a  presumptively non-venomous snakebite, which  was associated with R. mucosa bacteremia.

A Pain In The Neck: Lemierre Syndrome Presenting With Retropharyngeal Abscess, Clara Keum, Leo Midure

Rowan-Virtua Research Day

Lemierre syndrome is a rare but potentially life-threatening condition characterized by septic thrombophlebitis of the internal jugular vein following an oropharyngeal infection. It is most commonly associated with Fusobacterium necrophorum,  and typically begins with pharyngitis or deep neck space infections, which can extend into adjacent vascular structures. Retropharyngeal abscesses are among the deep neck infections that may predispose patients to this complication due to their proximity to the internal jugular vein and surrounding fascial planes.

Although Lemierre syndrome classically occurs in otherwise healthy adolescents and young adults, it can also develop in immunocompromised individuals or patients with complex medical conditions. …

Bacteriophage Therapy Vs. Standard Antibiotics: A Review Of Treatment Efficacy For Recurrent Pediatric S. Pyogenes (Gas) Infections, Kartik Kannan Oms-I, Karina Malhotra Oms-I, Gabrielle Coccio Oms-I, Janhavi Belwalkar Oms-I, Jason Rienzo Oms-I, Samay Shukla Oms-I, Valerie J. Carabetta Phd

Rowan-Virtua Research Day

Background: Antibiotic resistance poses a growing threat to pediatric infectious disease management, particularly in the treatment of Streptococcus pyogenes (GAS) infections.¹ While β-lactam antibiotics remain the first-line standard of care, their utility is limited by allergy prevalence and rising resistance among alternative antibiotic agents, such as macrolides, lincosamides, and tetracycline.^2,3 Given these trends, bacteriophage therapy has emerged as a promising adjunctive treatment modality, offering targeted bacterial lysis while sparing commensal microbiota.⁴

Methods: A systematic literature search was conducted across PubMed and Embase (2000–2025) using terms related to antibiotic resistance, Streptococcus pyogenes, bacteriophage therapy, and pediatric populations. …

Sonidegib (Lde225) Reduces Inflammatory Signaling And Preserves Taste Buds In A Sepsis Mouse Model, Ashlyn Mcclelland, Murod Khikmatov, Archana Kumari, Gabrielle Audu, Isaiah Nawaz, Kingsley Yin

Rowan-Virtua Research Day

Background:

Sepsis triggers a complex and widespread inflammatory response that disrupts multiple organ systems, including the taste organ. Loss of taste is a symptom recognized in sepsis survivors and has the potential to contribute to further complications such as anorexia. Prior work from our lab demonstrated that cecal ligation and puncture (CLP) in mice induces immune cell infiltration and alters taste bud morphology in the fungiform papillae located in the anterior tongue. We hypothesize that similar deleterious effects occur in the circumvallate papillae (CVP) of the posterior tongue and that the usage of the smoothened inhibitor, sonidegib, could reduce these …

Case Report: Necrotizing Pneumonia, Veroneka Mikhail Md

Rowan-Virtua Research Day

Necrotizing pneumonia is an uncommon but severe complication of community-acquired pneumonia (CAP), characterized by progressive parenchymal liquefaction, cavitation, and destruction of normal lung architecture, and associated with significant morbidity and mortality. Clinicaly, early presentations may be indistinguishable from uncomplicated pneumonia (pna), with fever, cough, pleuritic chest pain, and dyspnea, which can delay recognition in the emergency department. Differential diagnosis for these symptoms is broad and includes uncomplicated pneumonia, septic emboli, lung abscesses, and pleural effusion. However, patients effected with necrotizing pneumonia often exhibit more severe systemic toxicity, rapid progression of respiratory failure, and hemodynamic instability. In this case report, we …

Tuberculosis In Long-Term Asian American Immigrant Residents: Trends And Risk Factors In Cases Diagnosed ≥10 Years After U.S. Arrival, Katherine Xie, Kai Mon Lee, Todd Schachter

Rowan-Virtua Research Day

Tuberculosis in Long-Term Asian American Immigrant Residents: Trends and Risk Factors in Cases Diagnosed ≥10 Years After U.S. Arrival

Katherine Xie, MSc¹, Kai Mon Lee, PhD¹, Todd Schachter, DO¹

¹Rowan-Virtua School of Osteopathic Medicine, 1 Medical Center Dr, Stratford, NJ 08084

Background

In the U.S., TB cases are largely due to reactivation of latent TB infections (LTBI) of immigrants from high-burden countries. The CDC and U.S. Preventive Services Task Force currently recommend screening newer immigrant populations, especially those born in highly-burdened areas with TB. This guideline mostly targets newly immigrated populations, defined as those …

Comparison Of Ecg Features, Cardiac Biomarkers, And Clinical Outcomes In Three Waves Of Hospitalized Covid-19 Pneumonia Patients With Cardiovascular Events, Yuchen Han, Jahnavi Sunkara, Tshura S Ali, Harideep Samanapally, Vidyulata Salunkhe, Fnu Deepti, Emma C. Huang, Justin J. Huang, Maiying Kong, Jiapeng Huang

The University of Louisville Journal of Respiratory Infections

Background

Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) is a rapidly evolving virus that can severely impact the cardiovascular system. With new variants, it is important to characterize wave-specific (defined by dominant circulating variants) clinical changes.

Methods

A multi-center retrospective cohort study of patients hospitalized with SARS-CoV-2 community acquired pneumonia at eight adult acute-care hospitals in the city of Louisville, KY was conducted. Patients hospitalized with Coronavirus Disease 2019 (COVID-19) community acquired pneumonia who experienced a cardiovascular event between March 2020 and July 2022 were included in this analysis. Variant assignment was based on temporal prevalence rather than genomic confirmation, and …

Airborne Fungal Monitoring In Healthcare Environments: A Systematic Review, Dana L. Surwill, Patricia Cruz, Mark P. Buttner, Jennifer R. Pharr, Nancy Lough, Theresa T. Roehr

Environmental & Global Health Faculty Research

Background: Fungal infections pose a significant threat to public health, with over 6.55 million cases and 2.55 million deaths annually. Exposure to fungal spores in indoor environments primarily occurs through inhalation or direct contact with surfaces. Monitoring is critical for early detection and prevention of outbreaks, yet routine airborne fungal testing is not universally mandated across healthcare settings. Methods: A systematic review of peer-reviewed articles from four databases was conducted to identify current airborne fungal monitoring guidelines and best practices for sample collection, culture media, incubation conditions, and results interpretation. Results: Eighteen articles met the inclusion criteria, and four studies …

Adhesion Of Antibiotic-Resistant Bacteria To Thermoplastic Materials Used In Fabricating Medical Devices: Patient Consequences, Dev V. Mehta

Poster Presentations

Burn injury patients wear supportive orthoses made by heat-forming sheets of thermoplastic material (Figs. 1 & 2). Bacteria cause severe soft tissue infections in patients wearing contaminated orthoses. Thermoplastic medical devices can develop biofilms that include antibiotic-resistant (AR) bacteria, which significantly reduces the number of available treatment options. A biofilm is a community of microorganisms that share resources allowing them to exist in a nutrient-limited environment. Biofilm microbes secrete extracellular polymeric substance (EPS) that attaches them firmly to a substrate surface while protecting them from harmful substances, including antibiotics. Bacteria living within biofilms on inanimate surfaces can survive for extended …

Comparative Investigation Of Bacterial Adhesion On Medical Device Thermoplastics, Dev V. Mehta

Honors Theses

This project will focus on determining if differences in bacterial cell wall composition influences adhesiveness to thermoplastic materials used to construct patient orthotic splints. Bacteria with decreased adhesion are unable to remain bonded to orthotic splints, increasing its ability to transfer to a patient’s wound, leading to an infection. Antibiotic resistant bacteria used in this investigation included gram-positive cocci vancomycin-resistant (VRE) Enterococcus faecalis, methicillin-resistant Staphylococcus aureus (MRSA), and gram-negative rods extended-spectrum beta-lactamase (ESBL) Escherichia coli and Pseudomonas aeruginosa. Each test bacterium is a major pathogen causing healthcare-associated infections (HAIs). Saline, artificial perspiration, and ascites fluids were used to determine the …

Validation Of A Real-Time Pcr Laboratory Developed Test For The Detection Of Pneumocystis Jirovecii In Bronchoalveolar Lavage Samples, Caitlyn Moon

Honors Scholar Theses

Pneumocystis jirovecii is an opportunistic, host-obligate fungal pathogen responsible for causing P. jirovecii pneumonia (PJP) in humans. PJP is treated with trimethoprim-sulfamethoxazole (TMP-SMX), a strong broad-spectrum antibiotic that carries risk of renal and hepatotoxicity. Therefore, rapid diagnosis or exclusion of PJP is crucial to ensure PJP-positive patients receive effective treatment and PJP-negative patients avoid unnecessary antibiotics. Unlike most microorganisms, P. jirovecii cannot be cultured, presenting complications for the typical methods of diagnosing fungal pathogens. Historically, the gold standard for diagnosis was direct microscopic examination with stains such as methenamine silver and calcofluor white, but this diagnostic technique requires highly skilled …

Understanding The Role Of Toxs As A Bile Sensing Component Of The Toxrs Virulence Regulatory System In Vibrio Spp., Minje Kim

Dartmouth College Ph.D Dissertations

Pathogenic Vibrio bacteria, such as V. cholerae and V. parahaemolyticus, colonize in the human small intestine to cause severe gastrointestinal disease. During the infection, these bacteria encounter bile salts, antimicrobial cholesterol metabolites secreted into the intestine. Pathogenic Vibrio species have evolved to utilize bile salts as signals to regulate virulence. The signaling depends in part on ToxRS, a conserved co-component transmembrane transcription regulator. ToxRS consists of the transcription factor ToxR and its membrane-tethered binding partner ToxS. ToxS is required for ToxR stability and full transcriptional activity. Although bile salts are known to influence ToxRS-dependent virulence gene expression, the molecular …

Sepsis As An Immune Continuum: Cytokine Storm To Lymphopenia And Pics, Chelsey King

Senior Honors Theses

Sepsis is a leading cause of morbidity and mortality worldwide, driven by a dynamic immune continuum that progresses from early hyperinflammation to profound immunosuppression. This review examines the three overlapping phases of sepsis: the inflammation-mediated cytokine storm driven by dysregulated PRR activation, NF-κB signaling, and NETosis; apoptosis-driven lymphopenia involving caspase-mediated lymphocyte death, dendritic cell dysfunction, and metabolic exhaustion; and prolonged immunoparalysis culminating in persistent inflammation, immunosuppression, and catabolism syndrome (PICS). Key mechanisms linking these phases, including the co-existence of hyper- and hypo-inflammatory states, are synthesized alongside relevant clinical biomarkers such as IL-6, HLA-DR, and single-cell immune profiles. This review highlights …

Investigating The Synthesis And Antibacterial Activity Of A Main-Chain Cationic Polymer, Emily Smith

Honors Theses

Antibiotic resistance is a growing threat to public health. Due to the overuse of antibiotics in agriculture, the overprescription of antibiotics, and the misuse of antibiotics by patients, antibiotic resistance is spreading at an alarming rate. As antibiotic resistance spreads, the antibiotics we depend on to treat common infections become ineffective. Therefore, it is imperative to develop novel treatments for infections that do not increase the prevalence of antibiotic resistance. One treatment being explored is the use of synthetic polymers with antibacterial properties. Synthetic polymers are advantageous because they can be synthesized from widely available precursors and their structure is …

From Hard Hat To Headache: Cryptococcal Empyema And Meningitis In A Newly Diagnosed Hiv-Positive Construction Worker, Sebastian Echegaray, Collin Vargas, Vy Ngo

Central & West Texas and San Antonio GME Research Day 2026

No abstract provided.

Fatal Ochrobactrum Anthropi Bacteremia Following Intravenous Stem Cell Therapy In Immunocompetent Patient, Daler Kudratov, Wendy Martinez, Jonathan Barnett

Central & West Texas and San Antonio GME Research Day 2026

No abstract provided.