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Copen CE, Rushmore J, De Voux A, Kirkcaldy RD, Fakile YF, Tilchin C, Duchen J, Jennings JM, Spahnie M, Norris Turner A, Miller WC, Novak RM, Schneider JA, Trotter AB, Bernstein KT. Factors Associated with Syphilis Transmission and Acquisition Among Men Who Have Sex with Men (MSM): Protocol for a Multi-Site Egocentric Network Study (Preprint). JMIR Res Protoc 2022; 11:e40095. [PMID: 36331528 PMCID: PMC9675014 DOI: 10.2196/40095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/22/2022] [Accepted: 09/07/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND In the United States, the rates of primary and secondary syphilis have increased more rapidly among men who have sex with men (MSM) than among any other subpopulation. Rising syphilis rates among MSM reflect changes in both individual behaviors and the role of sexual networks (eg, persons linked directly or indirectly by sexual contact) in the spread of the infection. Decades of research examined how sexual networks influence sexually transmitted infections (STIs) among MSM; however, few longitudinal data sources focusing on syphilis have collected network characteristics. The Centers for Disease Control and Prevention, in collaboration with 3 sites, enrolled a prospective cohort of MSM in 3 US cities to longitudinally study sexual behaviors and STIs, including HIV, for up to 24 months. OBJECTIVE The Network Epidemiology of Syphilis Transmission (NEST) study aimed to collect data on the factors related to syphilis transmission and acquisition among MSM. METHODS The NEST study was a prospective cohort study that enrolled 748 MSM in Baltimore, Maryland; Chicago, Illinois; and Columbus, Ohio. NEST recruitment used a combination of convenience sampling, venue-based recruitment, and respondent-driven sampling approaches. At quarterly visits, participants completed a behavioral questionnaire and were tested for syphilis, HIV, gonorrhea, and chlamydia. The participants also provided a list of their sexual partners and described their 3 most recent partners in greater detail. RESULTS The NEST participants were enrolled in the study from July 2018 to December 2021. At baseline, the mean age of the participants was 31.5 (SD 9.1) years. More than half (396/727. 54.5%) of the participants were non-Hispanic Black, 29.8% (217/727) were non-Hispanic White, and 8.8% (64/727) were Hispanic or Latino. Multiple recruitment strategies across the 3 study locations, including respondent-driven sampling, clinic referrals, flyers, and social media advertisements, strengthened NEST participation. Upon the completion of follow-up visits in March 2022, the mean number of visits per participant was 5.1 (SD 3.2; range 1-9) in Baltimore, 2.2 (SD 1.6; range 1-8) in Chicago, and 7.2 (SD 2.9; range 1-9) in Columbus. Using a community-based participatory research approach, site-specific staff were able to draw upon collaborations with local communities to address stigma concerning STIs, particularly syphilis, among potential NEST participants. Community-led efforts also provided a forum for staff to describe the NEST study objectives and plans for research dissemination to the target audience. Strategies to bolster data collection during the COVID-19 pandemic included telehealth visits (all sites) and adaptation to self-collection of STI specimens (Baltimore only). CONCLUSIONS Data from NEST will be used to address important questions regarding individual and partnership-based sexual risk behaviors among MSM, with the goal of informing interventions to prevent syphilis in high-burden areas. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) RR1-10.2196/40095.
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Affiliation(s)
- Casey E Copen
- Division of STD Prevention, National Center for HIV, Viral Hepatitis, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Julie Rushmore
- Division of STD Prevention, National Center for HIV, Viral Hepatitis, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Alex De Voux
- Division of STD Prevention, National Center for HIV, Viral Hepatitis, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Robert D Kirkcaldy
- Division of STD Prevention, National Center for HIV, Viral Hepatitis, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA, United States
- Division of Scientific Education and Professional Development, Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Yetunde F Fakile
- Division of STD Prevention, National Center for HIV, Viral Hepatitis, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Carla Tilchin
- Center for Child and Community Health Research, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Department of Health, Behavior and Society, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Jessica Duchen
- Center for Child and Community Health Research, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Department of Health, Behavior and Society, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Jacky M Jennings
- Center for Child and Community Health Research, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Department of Health, Behavior and Society, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Morgan Spahnie
- Division of Epidemiology, The Ohio State University, Columbus, OH, United States
| | | | - William C Miller
- Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Richard M Novak
- Division of Infectious Disease, Department of Medicine, University of Illinois College of Medicine, Chicago, IL, United States
| | - John A Schneider
- Departments of Medicine and Public Health Sciences, University of Chicago, Chicago, IL, United States
- Howard Brown Health, Chicago, IL, United States
| | - Andrew B Trotter
- Division of Infectious Disease, Department of Medicine, University of Illinois College of Medicine, Chicago, IL, United States
| | - Kyle T Bernstein
- Division of STD Prevention, National Center for HIV, Viral Hepatitis, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA, United States
- Division of Scientific Education and Professional Development, Centers for Disease Control and Prevention, Atlanta, GA, United States
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