Dr. Connor’s Medical Publications

With over 200 peer-reviewed articles, Dr. Bradley A. Connor has made lasting contributions to the fields of travel medicine, infectious disease, and global health. His research spans topics such as emerging infections, vaccine-preventable illnesses, and gastrointestinal diseases, helping to shape best practices for clinicians worldwide. As the editor of Travel Medicine, now in its fourth edition, he has played a key role in defining the standard of care for travelers and healthcare providers alike.

Below is a selection of his published work, highlighting key studies and insights from his career. His publications include epidemiological research, clinical studies, and expert reviews that continue to inform medical practice and public health policies. Through decades of scholarship, Dr. Connor’s work remains an essential resource for professionals in travel and tropical medicine.

A Selection of Dr. Connor’s Publications


Travel Related Diagnoses Among U.S. Nonmigrant Travelers or Migrants Presenting to U.S. GeoSentinel Sites- GeoSentinel Network, 2012–2021

Brown AB, Miller C, Hamer DH, Kozarsky P, Libman M, Huits R, Rizwan A, Emetulu H, Waggoner J, Chen LH, Leung DT, Bourque D, Connor BA, Licitra C, Angelo KM. MMWR June 30, 2023; 72(7): 1–17.

Impact, Healthcare Utilization, and Costs of Travel-Associated Arthropod-borne Diseases in International Travelers: A Prospective Study

Tozan Y, Headley TY, Javelle E, Gautret P, Grobusch M, Chen LH, Menendez MD, Moro L, Gobbi F, Sánchez A, Connor BA, Matteelli A, Crosato V, Huits R, Libman M, Hamer DH. J Travel Med 2023, May 1–8. doi:10.1093/jtm/taad060. Epub ahead of print. PMID: 37129519.

Genomic Epidemiology of a SARS-CoV-2 Outbreak in a U.S. Major League Soccer Club: Was it Travel Related?

Carmola LR, Turcinovic J, Draper G, Webner D, Putukian M, Silvers, Granelli H, Bombin A, Connor B, Angelo K, Kozarsky P, Libman M, Huits R, Hamer D, Connor J, Fairley J, Paintadosi A, Bourque D. Open Forum Infect Dis 2023 (in press).

Is Standby Therapy for Covid-19 a Practical Option for Travelers?

Chen LH, Connor BA. J Travel Med 2022; 29(8): 1–3.

Clinical Evaluation of the BioFire FilmArray Gastrointestinal (GI) Panel for Use with Rectal Swab Specimens in Cary-Blair Media

Goos J, Neff C, Holmberg K, Lyons A, Monroe N, Selvarangan R, Banerjee D, Hueschen LA, Chapin K, Tansarli G, Silbert S, Lima A, Connor BA, Rogova M, Steele M, Stubbs AM, Dien Bard J, Flores-Vasquez J, Andjelic C. Open Forum Infect Dis 2022; 9(2): S296.

Acute Hepatitis A in International Travelers: A GeoSentinel Analysis, 2008–2020

Balogun O, Brown A, Angelo KM, Hochberg NS, Barnett ED, Nicolini LA, Asgeirsson H, Grobusch MP, Salvador F, Chen L, Odolini S, Díaz-Menéndez M, Connor BA, Libman M, Hamer DH. J Travel Med 2022; taac013. https://doi.org/10.1093/jtm/taac013

Comparative Effectiveness of Single Versus Repeat Rapid Antigen Testing in Antigen Positive Asymptomatic Individuals in a Workplace Setting

Connor BA, Rogova M, Garcia J, Patel D, Couto-Rodriguez M, Nagy-Szakal D, Rendel M. JAMA Network Open 2022; 5(3): e223073.

Monoclonal Antibody Therapy in a Vaccine Breakthrough SARS-CoV-Hospitalized Delta (B.1.617.2) Variant Case

Connor BA, Wells HL, Gardner M, Rogova M, Couto-Rodriguez M, Nagy-Szakal D, O’Hara NB. Int J Infect Dis 2021; 110: 232–234.

Performance Characteristics of Sequencing Assays for Identification of the SARS CoV-2 Viral Genome

Antaki D, Couto-Rodriguez M, Liu T, Butcher K, Toro E, Hoglund B, Jirau Serrano XO, Barrows J, Connor BA, Mason C, O’Hara N, Nagy-Szakal D. Open Forum Infect Dis 2021; 8(1): S286.

A Novel Likelihood-Based Model to Estimate SARS CoV-2 Viral Titer from Next-Generation Sequencing Data

Wells H, Barrows J, Couto-Rodriguez M, Jirau Serrano XO, Debieu M, Wessel K, Jonsson CB, Connor BA, Mason C, Nagy-Szakal D, O’Hara N. Open Forum Infect Dis 2021; 8(1): S281.

Yellow Fever Vaccine Administration at Global TravEpiNet (GTEN) Clinics During a Period of Limited Vaccine Availability in the United States, 2017–2018

Walker AT, Gershman MD, Rao SR, LaRocque RC, Ryan ET for the Global TravEpiNet Consortium. Am J Trop Med Hyg 2021; 104(3): 1079–1084.

What Will Travel Medicine Look Like in the COVID-19 Pandemic Era?

Shlim DR, Connor BA, Taylor DN. J Travel Med 2020. DOI: https://doi.org/10/jtm/taaa148

Commentary on Special Report in The New England Journal of Medicine by Mark Barnes, JD, LLM, and Paul E Sax, MD, Challenges of “Return to Work” in an Ongoing Pandemic

Bunn WB, Connor BA, Hamer DH, Kozarsky P. J Occup Environ Med 2020.

Epidemiological and Clinical Characteristics of International Travelers with Enteric Fever and Antibiotic Resistance Profiles of their Isolates: A GeoSentinel Analysis

Hagmann S, Angelo K, Huits R, Plewes K, Eperon G, Grobusch M, McCarthy A, Libman M, Caumes E, Leung D, Asgeirsson H, Jensenius M, Schwartz E, Sánchez-Montalvá QA, Kelly P, Pandey P, Leder K, Bourque D, Yoshimura Y, Mockenhaupt F, van Genderen P, Odolini S, Schlagenhauf P, Connor BA, Hamer D. Antimicrob Agents Chemother 2020: 01084-20R1.

Updates on the Epidemiology, Pathogenesis, Diagnosis and Management of Post-Infectious Irritable Bowel Syndrome

Riddle MR, Pisipati S, Connor BA. Curr Opin Infect Dis 2020.

Travel-related Hepatitis E: A GeoSentinel Global Surveillance Analysis, 1999–2018

Nicolini LA, Stoney RJ, Della Vecchia A, Grobusch M, Gautret P, Angelo KM, van Genderen PJ, Bottieau E, Leder K, Asgeirsson H, Leung D, Connor BA, Pandey P, Toscanini F, Gobbi F, Castelli F, Bassetti M, Hamer D. J Travel Med 2020 (in press).

Use of the Multiplex Diagnostic PCR Panel in Diarrheal Disease: Expert Guidance on the Interpretation of Results with a Focus on Travelers’ Diarrhea

Connor BA, Martin GJ, Riddle MS. Am J Gastroenterol 2020.

Zika Among International Travelers Presenting to GeoSentinel Sites, 2012–2019: Implications for Clinical Practice

Angelo KM, Stoney RJ, Brun-Cottan G, Leder K, Grobusch MP, Hochberg N, Kuhn S, Bottieau E, Schlagenhauf P, Chen L, Hynes NA, Perret Perez C, Mockenhaupt FP, Molina I, Cresoillo-Andujar C, Malvy D, Caumes E, Plourde P, Shaw M, McCarthy AE, Piper-Jenks N, Connor BA, Hamer DH, Wilder-Smith A for the GeoSentinel Network. J Travel Med 2020: taaa061. DOI: https://doi.org/10.1093/jtm/taaa061

Traveler Exposures to Animals: A GeoSentinel Analysis

Muehlenbein MP, Angelo KM, Schlagenhauf P, Chen L, Grobusch MP, Gautret P, Duvignaud A, Chappuis F, Kain KC, Bottieau E, Epelboin L, Shaw M, Hynes N, Hamer DH for the GeoSentinel Surveillance Network. J Travel Med 2020; Jan 28: taaa010.

Cholera in Travelers: A Systematic Review

Connor BA, Dawood R, Riddle MS, Hamer DH. J Travel Med 2019; 26(8): taz085.

A Dignitary Medicine Curriculum Developed Using a Modified Delphi Methodology

Al Mulhim M, Darling R, Sarin R, Hart A, Kamal H, Al Hadhirah A, Voskanyan A, Hofmann L, Connor BA, Band R, Jones J, Tubb R, Jackson R, Baez AA, Wasser E, Conley S, Lang W. Int J Emerg Med 2020; 13(11).

Travel-Associated Illnesses at International Mass Gatherings: A GeoSentinel Cross-Sectional Observational Study

Gautret P, Angelo K, Asgeirsson H, Duvignaud A, van Genderen P, Bottieau E, Chen L, Parker S, Connor BA, Barnett E, Libman M, Hamer DH. Travel Med Infect Dis 2019; 32 (Nov–Dec).

The Rise in Travel-Associated Measles Infections—GeoSentinel, 2015–2019

Angelo KM, Libman M, Gautret P, Barnett E, Grobusch P, Hagmann SHF, Schwartz E, van Genderen PJJ, Asgeirsson H, Hamer DH, GeoSentinel Network. J Travel Med 2019; 26(6). DOI: https://doi.org/10.1093/jtm/taz046

Characteristics and Preparation of the Last-Minute Traveler: Analysis of Vaccine Usage in the Global TravEpiNet Consortium

Yates JA, Rao SR, Walker AT, Sotir M, LaRocque RC, Ryan ET, The Global TravEpiNet Consortium. J Travel Med 2019. DOI: https://doi.org/10.1093/jtm/taz031

Cutaneous and Mucocutaneous Leishmaniasis in Travelers and Migrants: A 20-Year GeoSentinel Surveillance Network Analysis

Boggild AK, Caumes E, Grobusch MP, Schwartz E, Hynes NA, Libman M, Connor BA, Chakrabarti S, Parola P, Keystone JS, Nash T, Showler AJ, Schunk M, Asgeirsson H, Hamer DH, Kain KC, for the GeoSentinel Surveillance Network. J Travel Med 2019; taz055. DOI: https://doi.org/10.1093/jtm/taz055

Japanese Encephalitis Vaccine for Travelers: Risk-Benefit Reconsidered

Connor BA, Hamer DH, Kozarsky P, Jong E, Halstead SB, Keystone JS, Mileno MD, Dawood R, Rogers B, Bunn WB. J Travel Med 2019; 26(5): taz037.

When Should Travel Medicine Practitioners Prescribe Rifamycin SV-MMX for Self-Treatment of Travelers’ Diarrhea?

Ericsson CD, Connor BA, Riddle MS. J Travel Med 2019; 26(3): taz013.

Potentially Serious Drug Interactions Resulting from the Pretravel Health Encounter

Sbaih N, Buss B, Goyal D, Rao SR, Benefield R, Walker AT, Esposito DH, Ryan ET, LaRocque RC, Leung DT, and the Global TravEpiNet Consortium. Open Forum Infect Dis 2018; 5(11). DOI: https://doi.org/10.1093/ofid/ofy266

Fecal Microbiota Transplantation: What Is the Role in Travelers’ Diarrhea?

Riddle MS, Connor BA. J Travel Med 2018. DOI: https://doi.org/10.1093/jtm/tay129

Rapid Identification of Enteric Pathogens Using a Novel Stool PCR Test in Patients Presenting with Diarrhea at an Urban Community Teaching Hospital

Beckoff SD, Rodgers WH, Connor BA, Rubin M. Gastroenterology 2018; 154(6): S273–S274.

Illness Among US Resident Student Travelers After Return to the United States: A GeoSentinel Analysis, 2007–2017

Angelo KM, Haulman JN, Terry AC, Leung DT, Chen LH, Barnett ED, Hagmann SHF, Hynes NA, Connor BA, Anderson S, McCarthy A, Shaw M, van Genderen PJJ, Hamer DH. J Travel Med 2018.

Infectious Diseases Acquired by International Travellers Visiting the United States

Stoney RJ, Esposito DH, Kozarsky P, Hamer DH, Grobusch MP, Gkrania-Klotsas E, Libman M, Gautret P, Lim PL, Leder K, Schwartz E, Sotir MJ, Licitra C for the GeoSentinel Surveillance Network. J Travel Med 2018. DOI: https://doi.org/10.1093/jtm/tay053

Business Travel-Associated Illness: A GeoSentinel Analysis

Chen LH, Leder K, Barbre KA, Schlagenhauf P, Libman M, Keystone J, Mendelson M, Gautret P, Schwartz E, Shaw M, MacDonald S, McCarthy A, Connor BA, Esposito DH, Hamer D, Wilson ME for the GeoSentinel Surveillance Network. J Travel Med 2018; 25(1): tax097. DOI: https://doi.org/10.1093/jtm/tax097

Rabies Post-Exposure Prophylaxis Started During or After Travel: A GeoSentinel Analysis

Gautret P, Angelo KM, Asgeirsson H, Lalloo DG, Shaw M, Schwartz E, Libman M, Kain KC, Piyaphanee W, Murphy H, Leder K, Vincelette J, Jensenius M, Waggoner J, Leung D, Borwein S, Blumberg L, Schlagenhauf P, Barnett ED, Hamer DH, for the GeoSentinel Global Surveillance Network. PLoS Negl Trop Dis 2018; 12(11): e0006951. DOI: https://doi.org/10.1371/journal.pntd.0006951

Multiplex PCR Testing for Travelers’ Diarrhea: Friend or Foe?

Connor BA. Int J Infect Dis 2017. DOI: https://dx.doi.org/10.1016/j.ijid.2017.11.022

Use of a Multiplex DNA Extraction PCR in the Identification of Pathogens in Travelers’ Diarrhea

Connor BA, Rogova M, Whyte O. J Travel Med 2017; 1–6. DOI: https://doi.org/10.1093/jtm/tax087

Do Prebiotics Reduce the Risk of Travelers’ Diarrhea? Promising but More Research Needed

Connor BA. J Travel Med 2017. DOI: https://doi.org/10.1093/jtm/tax076

Management of Acute Diarrheal Illness During Deployment: A Deployment Health Guideline and Expert Panel Report

Expert Panel: Riddle MS, Martin GJ, Murray CK, Burgess TH, Connor P, Mancuso JD, Schnaubelt ER, Ballard TP, Fraser J, Tribble DR. Mil Med 2017; 182(Suppl): 34–52.

Oral Typhoid Vaccine and Culture Independent Testing for Travelers’ Diarrhea

Connor BA, Rogova M, Whyte O. J Travel Med 2017; 24(6). DOI: https://doi.org/10.1093/jtm/tax071

Zika Beyond the Americas: Travelers as Sentinels of Zika Virus Transmission. A GeoSentinel Analysis, 2012 to 2016

Leder K, Grobusch MP, Gautret P, Chen LH, Kuhn S, Lim PL, Yates J, McCarthy AE, Rothe C, Kato Y, Bottieau E, Huber K, Schwartz E, Stauffer W, Malvy D, Shaw MT, Rapp C, Blumberg L, Jensenius M, van Genderen PJJ, Hamer DH, for the GeoSentinel Surveillance Network. PLoS ONE 2017; 12(10): e0185689. DOI: https://doi.org/10.1371/journal.pone.0185689

Malaria After International Travel: A GeoSentinel Analysis, 2003–2016

Angelo KM, Libman M, Caumes E, Hamer DH, Kain KC, Leder K, Grobusch MP, Hagmann SH, Kozarsky P, Lalloo DG, Lim PL, Patimeteeporn C, Gautret P, Odolini S, Chappuis F, Esposito DH; GeoSentinel Network. Malar J 2017; 16(1): 293. DOI: 10.1186/s12936-017-1936-3

The Changing Epidemiology of Japanese Encephalitis and New Data: The Implications for New Recommendations for Japanese Encephalitis Vaccine

Bunn WB, Connor BA. Trop Dis Travel Med Vaccines 2017; DOI: 10.1186/s40794-017-0057-x

Guidelines for the Prevention and Treatment of Travelers’ Diarrhea: A Graded Expert Panel Report

Riddle MS, Connor BA, Beeching NJ, DuPont HL, Hamer DH, Kozarsky P, Libman M, Steffen R, Taylor D, Tribble DR, Vila J, Zanger P, Ericsson CD. J Travel Med 2017; 24(Suppl 1): S2–S19. DOI: https://doi.org/10.1093/jtm/tax026

Antibiotic Self-Treatment of Travelers’ Diarrhea: It Only Gets Worse!

Keystone JS, Connor BA. Travel Med Infect Dis 2017.

Bordetella Pertussis Infections in Travelers: Data from the GeoSentinel Global Network

Barbosa F, Barnett ED, Gautret P, Schlagenhauf P, van Genderen PJJ, Grobusch MP, Connor BA, Hamer DH, Hochberg NS. J Travel Med 2017; 1–5. DOI: https://doi.org/10.1093/jtm/taw094

Clostridium Difficile Infection in Returning Travellers

Stevens AM, Esposito DH, Stoney RJ, Hamer DH, Flores-Figueroa J, Bottieau E, Connor BA, Gkrania-Klotsas E, Goorhuis A, Hynes NA, Libman M, Lopez-Velez R, McCarthy AE, von Sonnenburg F, Schwartz E, van Genderen PJJ, Benson LS, Leung DT for the GeoSentinel Surveillance Network. J Travel Med 2017; 1–6. DOI: https://doi.org/10.1093/jtm/taw099

Travel-Associated Zika Virus Disease Acquired in the Americas Through February 2016: A GeoSentinel Analysis

Hamer DH, Barbre KA, Chen LH, Grobusch MP, Schlagenhauf P, Goorhuis A, van Genderen PJJ, Molina I, Asgeirsson H, Kozarsky PE, Caumes E, Hagmann SH, Mockenhaupt FP, Eperon G, Barnett ED, Bottieau E, Boggild AK, Gautret P, Hynes NA, Kuhn S, Lash R, Leder K, Libman M, Malvy DJM, Perret C, Rothe C, Schwartz E, Wilder-Smith A, Cetron MS, Esposito DH for the GeoSentinel Surveillance Network. Ann Intern Med 2017; 166: 99–108.

Cutaneous and Mucocutaneous Leishmaniasis in International Travelers: Results from the GeoSentinel Surveillance Network

Boggild AK, Caumes E, Connor BA, Chakrabarti S, Parola P, Hynes NA, Keystone JS, Libman M, Nash T, Schwartz E, Showler AJ, Hamer DH, Kain KC for the GeoSentinel Surveillance Network. Am J Trop Med Hyg 2016; 95(5 Suppl): 206.

An Update on Travel Vaccines and Issues in Travel and International Medicine

Rogers B, Bunn WB, Connor BA. Workplace Health Saf 2016; 64(10): 462–468.

The Traveling Microbiome

Riddle MS, Connor BA. Curr Infect Dis Rep 2016; 18:29. DOI: https://doi.org/10.1007/s11908-016-0536-7

Post-Infectious Sequelae of Travelers’ Diarrhea: Reactive Arthritis, Guillain-Barré Syndrome, and Irritable Bowel Syndrome

Connor BA. Curr Trop Med Rep 2016; 3(3): 102–107.


Dr. Bradley A. Connor’s extensive body of work reflects a lifelong commitment to advancing medical knowledge and improving patient care. His research continues to shape the fields of travel medicine and infectious disease, providing valuable insights for clinicians, researchers, and global health professionals. For a complete list of publications or to explore specific studies in more detail, please contact our office or refer to major medical journals and research databases.