Background: The United States has seen a > 40% increase in syphilis cases since 2017. Early disease identification and treatment are crucial. This review sought to identify emergency department (ED) patients at risk for syphilis.
Methods: A 30-day retrospective review was conducted of visits to a single ED. Patient visits were assessed for predetermined syphilis "flags" to include a history of sexually transmitted infection (STI), current chief complaint or reason for visit (RFV) keyword(s) suggestive of potential STI or a positive pregnancy test result. Flagged charts were assessed for STI testing results within 6 months of ED visit. Data were analyzed using χ2 .
Results: There were 5537 total patient encounters, resulting in 455 flagged visits from 408 (8.4%) unique individuals, majority of whom were female (282, 69.1%; P < 0.001), Black (251, 61.5%; P < 0.001), aged 15 to 44 years (308, 75.5%; P < 0.001). Chief complaint was the most frequent flag (65.3%), followed by RFV (37.4%), prior STI (31.0%), and pregnancy (12.3%). Syphilis testing data were available for 120 flagged patients; 29 (24.2%) screened positive, including 11 (2.7% of total flagged cohort) with evidence for active infection. Among those, most were Black (90.9%), male (72.7%), aged 25 to 34 years (63.6%), and 9 (81.8%) had concomitant HIV. In active infection, prior STI flag was most common (72.7%), followed by chief complaint (54.5%) and RFV (45.5%).
Conclusions: This review demonstrates the performance of an electronic medical record-based "syphilis risk flag" screener applied to ED patients. Sex- and race-based discrepancies exist in flag rates, which may be reflective of sex- and race-based epidemiologic discrepancies in STI incidence.
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