Travis Nielsen

Title(s)Resident Physician, Medicine
SchoolVc-health Sciences-schools
Address9500 Gilman Drive #
La Jolla CA 92093
ORCID ORCID Icon0000-0003-3366-7912 Additional info
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    Collapse Biography 
    Collapse Education and Training
    Loyola University Chicago, Maywood, ILMD05/2023Medicine
    University of Southern California, Los Angeles, CAPhD05/2018Medical Biology
    Loyola University Chicago, Maywood, ILMPH05/2023Policy & Management
    University of California Riverside, Riverside, CABA12/2012Chemistry
    Collapse Awards and Honors
    Health & Medicine Policy Research Group2022  - 2023Schweitzer Fellowship
    Loyola University Chicago2019  - 2023Honors in Research
    Alpha Sigma Nu2019Honor Society Member
    Parkinson School of Health Sciences and Public Health2018  - 2023Public Health Scholar
    American Society for Microbiology2019Outstanding Abstract
    University of Southern California2018The Order of Arêté

    Collapse Overview 
    Collapse Overview
    Travis Nielsen earned his Bachelor of Arts degree in 2012 studying Chemistry and French Literature at the University of California Riverside, where he made the Dean's List throughout his attendance. He went on to earn his Doctorate of Philosophy degree in 2018 studying Medical Biology under the mentorship of Brad Spellberg, MD at the Keck School of Medicine of the University of Southern California, where he was recognized with the university's highest honor, The Order of Arêté. Drs. Spellberg and Nielsen continue to collaborate on various projects, including translational research of non-traditional therapeutics for treating antimicrobial-resistant infections as well as commentating on a wide range of topics including antibodies and COVID immunity and the sustainable development of antibiotics.
    ​
    Dr. Nielsen was awarded the prestigious Grant for Emerging Researchers/Clinicians Mentorship (G.E.R.M.) in 2020 by the Infectious Diseases Society of America, highlighting his efforts to expand antimicrobial stewardship to the outpatient setting under the guidance of Fritzie Albarillo, MD at the Stritch School of Medicine of Loyola University Chicago, where he graduated in 2023 with his MD and MPH degrees. The Illinois Department of Public Health invited them to present their research at the IDPH Summit on Antimicrobial Stewardship, which was recently published in the journal Antimicrobial Stewardship & Healthcare Epidemiology.
    ​
    Community engagement and mentorship are among Dr. Nielsen's greatest passions. He was selected for The Albert Schweitzer Fellowship, spotlighting his innovative efforts to provide preventive healthcare services to Spanish-speaking immigrant populations.
    ​
    He is now in the Physician-Scientist Training Pathway at the University of California San Diego, where he is a post-graduate trainee in Internal Medicine and Infectious Diseases.

    Collapse Bibliographic 
    Collapse Publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Restoring cefepime activity against multidrug-resistant KPC-producing Klebsiella pneumoniae by combination with boronic acid inhibitors, MB076 and S02030. Antimicrob Agents Chemother. 2025 Mar 05; 69(3):e0096424. Rojas LJ, Nielsen TB, Pantapalangkoor P, Taracila MA, Introvigne ML, Sharma R, Yeshwante S, Mojica MF, Papp-Wallace KM, Hujer AM, Prati F, Caselli E, Spellberg B, Rather PN, Rao GG, Bonomo RA. PMID: 39873501; PMCID: PMC11881554.
      View in: PubMed   Mentions:    Fields:    
    2. Sustainable solutions to the continuous threat of antimicrobial resistance. Health Aff Sch. 2025 Feb; 3(2):qxaf012. Spellberg B, Gilbert DN, Baym M, Bearman G, Boyles T, Casadevall A, Forrest GN, Freling S, Ghanem B, Hamilton F, Luna B, Moore J, Musher DM, Nielsen TB, Nori P, Phillips MC, Pirofski LA, Shorr AF, Tong SYC, Lee TC, McDonald EG. PMID: 39916975; PMCID: PMC11798182.
      View in: PubMed   Mentions:
    3. Revisiting diagnostics: erythrocyte sedimentation rate and C-reactive protein: it is time to stop the zombie tests. Clin Microbiol Infect. 2025 Jan; 31(1):1-4. Spellberg B, Nielsen TB, Phillips MC, Ghanem B, Boyles T, Jegorovic B, Footer B, Mah JK, Lieu A, Scott J, Wald-Dickler N, Lee TC, McDonald EG. PMID: 39209263.
      View in: PubMed   Mentions:    Fields:    
    4. A protein-free vaccine stimulates innate immunity and protects against nosocomial pathogens. Sci Transl Med. 2023 10 04; 15(716):eadf9556. Yan J, Nielsen TB, Lu P, Talyansky Y, Slarve M, Reza H, Novakovic B, Netea MG, Keller AE, Warren T, DiGiandomenico A, Sellman BR, Luna BM, Spellberg B. PMID: 37792959; PMCID: PMC10947341.
      View in: PubMed   Mentions: 5     Fields:    Translation:AnimalsCells
    5. Development of a Bispecific Antibody Targeting Clinical Isolates of Acinetobacter baumannii. J Infect Dis. 2023 04 26; 227(9):1042-1049. Nielsen TB, Yan J, Slarve M, Li R, Junge JA, Luna BM, Wilkinson I, Yerramalla U, Spellberg B. PMID: 36617220; PMCID: PMC10319980.
      View in: PubMed   Mentions: 6     Fields:    Translation:Cells
    6. Introducing antimicrobial stewardship to the outpatient clinics of a suburban academic health system. Antimicrob Steward Healthc Epidemiol. 2022; 2(1):e9. Nielsen TB, Santarossa M, Probst B, Labuszewski L, Lopez J, Barsanti-Sekhar M, Albarillo F. PMID: 35899218; PMCID: PMC9319114.
      View in: PubMed   Mentions:
    7. Monoclonal Antibody Requires Immunomodulation for Efficacy Against Acinetobacter baumannii Infection. J Infect Dis. 2021 12 15; 224(12):2133-2147. Nielsen TB, Yan J, Luna BM, Talyansky Y, Slarve M, Bonomo RA, Spellberg B. PMID: 34036366; PMCID: PMC8672769.
      View in: PubMed   Mentions: 10     Fields:    Translation:AnimalsCells
    8. Monoclonal Antibody Therapy against Acinetobacter baumannii. Infect Immun. 2021 09 16; 89(10):e0016221. Nielsen TB, Yan J, Slarve M, Lu P, Li R, Ruiz J, Lee B, Burk E, Talyansky Y, Oelschlaeger P, Hurth K, Win W, Luna BM, Bonomo RA, Spellberg B. PMID: 34310884; PMCID: PMC8445169.
      View in: PubMed   Mentions: 18     Fields:    Translation:AnimalsCells
    9. Antibodies, Immunity, and COVID-19. JAMA Intern Med. 2021 04 01; 181(4):460-462. Spellberg B, Nielsen TB, Casadevall A. PMID: 33231673; PMCID: PMC8371694.
      View in: PubMed   Mentions: 22     Fields:    Translation:HumansCells
    10. Capsule carbohydrate structure determines virulence in Acinetobacter baumannii. PLoS Pathog. 2021 02; 17(2):e1009291. Talyansky Y, Nielsen TB, Yan J, Carlino-Macdonald U, Di Venanzio G, Chakravorty S, Ulhaq A, Feldman MF, Russo TA, Vinogradov E, Luna B, Wright MS, Adams MD, Spellberg B. PMID: 33529209; PMCID: PMC7880449.
      View in: PubMed   Mentions: 38     Fields:    Translation:AnimalsCells
    11. A nutrient-limited screen unmasks rifabutin hyperactivity for extensively drug-resistant Acinetobacter baumannii. Nat Microbiol. 2020 09; 5(9):1134-1143. Luna B, Trebosc V, Lee B, Bakowski M, Ulhaq A, Yan J, Lu P, Cheng J, Nielsen T, Lim J, Ketphan W, Eoh H, McNamara C, Skandalis N, She R, Kemmer C, Lociuro S, Dale GE, Spellberg B. PMID: 32514072; PMCID: PMC7483275.
      View in: PubMed   Mentions: 31     Fields:    Translation:AnimalsCells
    12. Ensuring Sustainability of Needed Antibiotics: Aiming for the DART Board. Ann Intern Med. 2019 10 15; 171(8):580-582. Spellberg B, Nielsen TB, Gilbert DN, Shorr AF, Brass EP. PMID: 31590184; PMCID: PMC7296826.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    13. Adjunctive transferrin to reduce the emergence of antibiotic resistance in Gram-negative bacteria. J Antimicrob Chemother. 2019 09 01; 74(9):2631-2639. Luna BM, Ershova K, Yan J, Ulhaq A, Nielsen TB, Hsieh S, Pantapalangkoor P, Vanscoy B, Ambrose P, Rudin S, Hujer K, Bonomo RA, Actis L, Skaar EP, Spellberg B. PMID: 31170282; PMCID: PMC6736376.
      View in: PubMed   Mentions: 9     Fields:    Translation:HumansCells
    14. Natural history of Acinetobacter baumannii infection in mice. PLoS One. 2019; 14(7):e0219824. Luna BM, Yan J, Reyna Z, Moon E, Nielsen TB, Reza H, Lu P, Bonomo R, Louie A, Drusano G, Bulitta J, She R, Spellberg B. PMID: 31318907; PMCID: PMC6638954.
      View in: PubMed   Mentions: 20     Fields:    Translation:AnimalsCells
    15. Sustainable Discovery and Development of Antibiotics - Is a Nonprofit Approach the Future? N Engl J Med. 2019 Aug 08; 381(6):503-505. Nielsen TB, Brass EP, Gilbert DN, Bartlett JG, Spellberg B. PMID: 31216396; PMCID: PMC6697094.
      View in: PubMed   Mentions: 29     Fields:    Translation:Humans
    16. Vaccines targeting Staphylococcus aureus skin and bloodstream infections require different composition. PLoS One. 2019; 14(6):e0217439. Luna BM, Nielsen TB, Cheng B, Pantapalangkoor P, Yan J, Boyle-Vavra S, Bruhn KW, Montgomery C, Spellberg B, Daum R. PMID: 31181086; PMCID: PMC6557488.
      View in: PubMed   Mentions: 8     Fields:    Translation:AnimalsCells
    17. Publisher Correction: SERPINB1-mediated checkpoint of inflammatory caspase activation. Nat Immunol. 2019 May; 20(5):664. Choi YJ, Kim S, Choi Y, Nielsen TB, Yan J, Lu A, Ruan J, Lee HR, Wu H, Spellberg B, Jung JU. PMID: 30846880; PMCID: PMC9045526.
      View in: PubMed   Mentions: 1     Fields:    
    18. Apotransferrin in Combination with Ciprofloxacin Slows Bacterial Replication, Prevents Resistance Amplification, and Increases Antimicrobial Regimen Effect. Antimicrob Agents Chemother. 2019 05; 63(5). Ambrose PG, VanScoy BD, Luna BM, Yan J, Ulhaq A, Nielsen TB, Rudin S, Hujer K, Bonomo RA, Actis L, Skaar E, Spellberg B. PMID: 30782989; PMCID: PMC6496049.
      View in: PubMed   Mentions: 5     Fields:    Translation:Cells
    19. SERPINB1-mediated checkpoint of inflammatory caspase activation. Nat Immunol. 2019 03; 20(3):276-287. Choi YJ, Kim S, Choi Y, Nielsen TB, Yan J, Lu A, Ruan J, Lee HR, Wu H, Spellberg B, Jung JU. PMID: 30692621; PMCID: PMC6450391.
      View in: PubMed   Mentions: 57     Fields:    Translation:HumansAnimalsCells
    20. Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia. J Vis Exp. 2018 06 28; (136). Nielsen TB, Yan J, Luna B, Spellberg B. PMID: 30010650; PMCID: PMC6102004.
      View in: PubMed   Mentions: 17     Fields:    Translation:HumansAnimals
    21. Diabetes Exacerbates Infection via Hyperinflammation by Signaling through TLR4 and RAGE. mBio. 2017 08 22; 8(4). Nielsen TB, Pantapalangkoor P, Yan J, Luna BM, Dekitani K, Bruhn K, Tan B, Junus J, Bonomo RA, Schmidt AM, Everson M, Duncanson F, Doherty TM, Lin L, Spellberg B. PMID: 28830942; PMCID: PMC5565964.
      View in: PubMed   Mentions: 33     Fields:    Translation:AnimalsCells
    22. Monoclonal Antibody Protects Against Acinetobacter baumannii Infection by Enhancing Bacterial Clearance and Evading Sepsis. J Infect Dis. 2017 08 15; 216(4):489-501. Nielsen TB, Pantapalangkoor P, Luna BM, Bruhn KW, Yan J, Dekitani K, Hsieh S, Yeshoua B, Pascual B, Vinogradov E, Hujer KM, Domitrovic TN, Bonomo RA, Russo TA, Lesczcyniecka M, Schneider T, Spellberg B. PMID: 28931235; PMCID: PMC5853763.
      View in: PubMed   Mentions: 43     Fields:    Translation:HumansAnimalsCells
    23. Selectable Markers for Use in Genetic Manipulation of Extensively Drug-Resistant (XDR) Acinetobacter baumannii HUMC1. mSphere. 2017 Mar-Apr; 2(2). Luna BM, Ulhaq A, Yan J, Pantapalangkoor P, Nielsen TB, Davies BW, Actis LA, Spellberg B. PMID: 28497114; PMCID: PMC5422034.
      View in: PubMed   Mentions: 12     Fields:    
    24. Evaluation of serotypes 5 and 8 capsular polysaccharides in protection against Staphylococcus aureus in murine models of infection. Hum Vaccin Immunother. 2017 07 03; 13(7):1609-1614. Cheng BL, Nielsen TB, Pantapalangkoor P, Zhao F, Lee JC, Montgomery CP, Luna B, Spellberg B, Daum RS. PMID: 28422567; PMCID: PMC5512765.
      View in: PubMed   Mentions: 6     Fields:    Translation:HumansAnimalsCells
    25. Clinical and Pathophysiological Overview of Acinetobacter Infections: a Century of Challenges. Clin Microbiol Rev. 2017 01; 30(1):409-447. Wong D, Nielsen TB, Bonomo RA, Pantapalangkoor P, Luna B, Spellberg B. PMID: 27974412; PMCID: PMC5217799.
      View in: PubMed   Mentions: 469     Fields:    Translation:HumansCells
    26. Ly6G-mediated depletion of neutrophils is dependent on macrophages. Results Immunol. 2016; 6:5-7. Bruhn KW, Dekitani K, Nielsen TB, Pantapalangkoor P, Spellberg B. PMID: 26870635; PMCID: PMC4711394.
      View in: PubMed   Mentions: 40  
    27. Cryopreservation of virulent Acinetobacter baumannii to reduce variability of in vivo studies. BMC Microbiol. 2015 Nov 02; 15:252. Nielsen TB, Bruhn KW, Pantapalangkoor P, Junus JL, Spellberg B. PMID: 26526621; PMCID: PMC4630970.
      View in: PubMed   Mentions: 14     Fields:    Translation:AnimalsCells
    28. Host fate is rapidly determined by innate effector-microbial interactions during Acinetobacter baumannii bacteremia. J Infect Dis. 2015 Apr 15; 211(8):1296-305. Bruhn KW, Pantapalangkoor P, Nielsen T, Tan B, Junus J, Hujer KM, Wright MS, Bonomo RA, Adams MD, Chen W, Spellberg B. PMID: 25378635; PMCID: PMC4447835.
      View in: PubMed   Mentions: 61     Fields:    Translation:AnimalsCells
    29. Transferrin iron starvation therapy for lethal bacterial and fungal infections. J Infect Dis. 2014 Jul 15; 210(2):254-64. Lin L, Pantapalangkoor P, Tan B, Bruhn KW, Ho T, Nielsen T, Skaar EP, Zhang Y, Bai R, Wang A, Doherty TM, Spellberg B. PMID: 24446527; PMCID: PMC4092247.
      View in: PubMed   Mentions: 26     Fields:    Translation:HumansAnimalsCells
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