Stephen Andrew Thacker

Dr. Stephen Andrew Thacker

orcid

Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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2 September 2024 in Antibiotics
Verified
Journal Article
Open access
PDF file
HPHanna Persha
Hanna Persha
STStephen Andrew Thacker
Stephen Andrew Thacker
KHKrutika Mediwala Hornback
Krutika Mediwala Hornback
GAGustavo Rey Alvira-Arill
Gustavo Rey Alvira-Arill
RLRichard Lueking
Richard Lueking
TMTaylor Morrisette
Taylor Morrisette
Introduction: Daptomycin (DAP) is a cyclic lipopeptide that exhibits potent in vitro activity against many drug-resistant gram-positive organisms, including methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE). Despite substantial reports evaluating the clinical outcomes of DAP within the adult population, real-world data are lacking in children. The primary goal of this evaluation was to describe the clinical characteristics and outcomes of DAP use in pediatric patients across a wide range of infections. Methods: This retrospective evaluation included patients < 18 years of age who were treated with DAP from January 2014 to May 2023. The primary objective was to evaluate the composite clinical success, which was defined as a 30-day survival, the lack of a 30-day microbiological recurrence, and the resolution of signs and symptoms of an acute infection without therapy modifications based on clinical failures. Secondary objectives included adverse effects potentially attributable to DAP and reasons for DAP utilization. Results: Forty patients were included, which were predominately male (62.5%) and white (52.5%), with a median age of 8.7 [IQR, 4.4–16.0] years. DAP was used for a wide range of infections, including central line-associated bloodstream infections (CLABSIs; 32.5%), infective endocarditis (15.0%), surgical-site infections (12.5%), and osteomyelitis (12.5%). The most common pathogen isolated was MRSA (37.5%), and most patients were bacteremic (60.0%). The median DAP dose was 8 [IQR, 6–10] mg/kg, and the median duration of the DAP therapy was 11.5 [IQR, 4.8–18.8] days. Most patients achieved composite clinical success (75.0%). An adverse effect occurred in 5.0% of the patients. DAP was prescribed the most for its ease of use/ability to facilitate discharge (40.0%) and/or for issues with alternative therapies (37.5%). Conclusion: Most pediatric patients that received DAP demonstrated clinical success with a low incidence of adverse effects. Larger, real-world studies of DAP use are necessary to further assess clinical outcomes.

26 November 2025 in Open Forum Infectious Diseases
Verified
Journal Article
Open access
SBSamantha Brace
Samantha Brace
GAGustavo Rey Alvira-Arill
Gustavo Rey Alvira-Arill
AHAaron Hamby
Aaron Hamby
RBRachel Burgoon
Rachel Burgoon
ZGZachary P Gruss
Zachary P Gruss
KHKrutika Mediwala Hornback
Krutika Mediwala Hornback
Background: Antimicrobial stewardship programs (ASPs) aim to optimize antimicrobial use through coordinated interventions that improve patient outcomes and reduce adverse events. While guidance exists from organizations including the Centers for Disease Control and Prevention and the Infectious Diseases Society of America, recommendations on effort allocation, working hours, and initiatives remain unclear. Methods: This cross-sectional survey assessed the institutional structure, effort allocation, initiatives, and on-call participation of adult ASPs in the United States from September to October 2024. The survey was distributed via email to several ASP-related listservs. Respondents indicating on-call participation were also inquired about working hours, initiatives performed, participants, and compensation. Results: Of 69 responses, most were from academic medical centers (59%) or community hospitals (35%), with 65% covering >500 beds. ASPs were often system-wide (78%) and primarily funded by their respective departments of pharmacy (87%). Common initiatives performed by all ASPs include answering ASP/infectious diseases questions, therapy de-escalation, and prospective audit and feedback. Twenty-four (69%) respondents indicated having an on-call model, with said programs reporting higher median inpatient full-time equivalents (FTEs) for physicians (0.5 vs 0.25) and pharmacists (2.9 vs 1.45) than those without. Commonly performed after-hours initiatives include preauthorization and answering microbiology inquiries. On-call coverage was generally performed during weekend daytimes and holidays, most often by pharmacists. Conclusions: This survey highlights differences in structure, effort allocation, and initiatives of ASPs based on on-call participation. Institutions participating in on-call reported higher FTE assignments for physicians and pharmacists and were more likely to perform time-sensitive initiatives.

26 February 2023 in Cureus
Verified
Journal Article
Open access
PDF file
STStephen Andrew Thacker
Stephen Andrew Thacker
Invasive Streptococcus pneumoniae disease (IPD) remains a serious cause of morbidity and loss of life in children and adults worldwide. While pneumococcal vaccines have reduced the frequency of invasive pneumococcal disease, the emergence of invasive non-vaccine serotypes has mandated the development of novel pneumococcal vaccines to further protect against these emerging serotypes. We present a case of a non-vaccine serotype invasive pneumococcal disease-causing septic shock, meningitis, and stroke in a previously healthy and appropriately vaccinated 23-month-old male.

1 December 2016 in The Journal of Pediatrics
Verified
Journal Article
Closed access
AWAndrea Waldman
Andrea Waldman
LTLaura Thomas
Laura Thomas
STStephen Andrew Thacker
Stephen Andrew Thacker
DEDonna Evans
Donna Evans

27 July 2025 in Nutrition in Clinical Practice
Verified
Journal Article
Open access
HKHamza Hassan Khan
Hamza Hassan Khan
CJCandi S. Jump
Candi S. Jump
JBJessica Bauer
Jessica Bauer
QWQian Wu
Qian Wu
STStephen Andrew Thacker
Stephen Andrew Thacker
AEAllison Ross Eckard
Allison Ross Eckard
Background: Lack of central venous line (CVL) sites is a common indication for intestinal transplantation in intestinal failure (IF) patients. For treatment of central line‐associated bloodstream infections (CLABSIs), many pediatric gastroenterologists preserve CVL access, but line removal is typically recommended for Candida sp CLABSI due to high risk of systemic complications. However, no data exist on outcomes for IF patients treated for Candida sp CLABSI. This study aims to assess if CVL preservation increases the risk of complications or recurrence. Materials and Methods: A retrospective chart review was conducted for children <18 years of age with IF and Candida sp CLABSI between 2012 and 2023. Patients with blood cultures positive for Candida sp from the CVL were included. Each CLABSI event was analyzed for key variables. Results: Twelve patients were included, with 18 events (median age 6.4 years). Candida species identified included C albicans (33.3%) and C parapsilosis (38.9%). Antifungal therapy exceeded 14 days in all events, and ethanol lock therapy (70% concentration) was used in 72%. CVL was removed in 44.4% of events. Five patients had multiple events, with Candida species identified in subsequent infections. No secondary site seeding or long‐term sequelae occurred, and no patients died. Conclusion: Our data suggest that CVL preservation in pediatric IF patients with Candida sp CLABSI is feasible without increased complications or mortality. Limitations include small sample size and retrospective design.

28 August 2025 in Antibiotics
Verified
Journal Article
Open access
PDF file
AMAmy Miller
Amy Miller
MGMadison Brooke Grizzle
Madison Brooke Grizzle
HPHalee Van Poppel
Halee Van Poppel
GAGustavo Rey Alvira-Arill
Gustavo Rey Alvira-Arill
RLRichard Lueking
Richard Lueking
TMTaylor Morrisette
Taylor Morrisette
Background/Objectives: Ceftaroline (CPT) is a broad-spectrum, fifth-generation cephalosporin with in vitro activity against methicillin-resistant Staphylococcus aureus (MRSA) and drug-resistant Streptococcus pneumoniae. Real-world data on its use in pediatric patients remain limited. This study aimed to the describe clinical characteristics and outcomes associated with CPT use in pediatric patients at a pediatric academic medical center. Methods: This retrospective case series evaluated patients under 18 years of age who received CPT between November 2016 and August 2023. The primary outcome was clinical success, defined as a composite of 30-day survival, absence of microbiological recurrence within 30 days, and/or resolution of acute infection signs and symptoms without therapy modification due to clinical failure. The secondary outcomes included adverse effects potentially attributable to CPT and the clinical rationale guiding its use. Results: Among 25 patients, most were male (68%) with a median (IQR) age of 3.4 (1.4–14.3) years. The indications for use commonly included respiratory infections (48%), bacteremia (16%), and/or skin and soft tissue (12%) infections. The frequently used dosing regimens included 12 mg/kg (36%) and 8 mg/kg (28%) q8hr, with a median (IQR) duration of therapy of 4.6 (1.7–10.0) days. Clinical success was achieved in 96% of patients. No adverse effects attributable to CPT were observed and CPT was commonly used for escalation (40%) and/or issues with alternative therapies (36%). Conclusions: CPT use was associated with high clinical success rates and no observed adverse effects in this pediatric report. These findings support its use as a therapeutic option when the alternatives are limited. Larger multicenter studies are needed to further evaluate the clinical outcomes and safety of CPT use in pediatric patients.