Last data update: Jan 27, 2025. (Total: 48650 publications since 2009)
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Test of cure return rate and test positivity, Strengthening the U.S Response to Resistant Gonorrhea (SURRG), United States, 2018-2019
Schlanger K , Mauk K , Learner ER , Schillinger JA , Nishiyama M , Kohn R , Thibault C , Hermus H , Dewater J , Pabon V , Black J , St Cyr S , Pham CR , Kirkcaldy RD . Sex Transm Dis 2021 48 S167-S173 BACKGROUND: Reduced antibiotic susceptibility (RS) in Neisseria gonorrhoeae (GC) may increase treatment failure. Conducting tests-of-cure (TOC) for patients with RS-GC may facilitate identification of treatment failures. METHODS: We examined 2018-2019 data from eight jurisdictions participating in CDC's Strengthening U.S. Response to Resistant Gonorrhea project. Jurisdictions collected GC isolates and epidemiological data from patients and performed antimicrobial susceptibility testing. Minimum inhibitory concentrations of ceftriaxone ≥0.125 μg/mL, cefixime ≥0.250 μg/mL, or azithromycin ≥2.0 μg/mL were defined as RS. Patients with RS-infections were asked to return for a TOC 8-10 days post-treatment. We calculated a weighted TOC return rate and described time to TOC and suspected reasons for any positive TOC results. RESULTS: Overall, 1,165 patients were diagnosed with RS-infections. Over half returned for TOC (weighted TOC: 61% [95% confidence interval: 50.1%-72.6%], range by jurisdiction: 32%-80%). TOC rates were higher among asymptomatic (68%) than symptomatic patients (53%, p = 0.001), and MSM (62%) compared to MSW (50%; p < 0.001). Median time between treatment and TOC was 12 days (interquartile range: 9-16). Of the 31 (4.5%) TOC patients with positive results, 13 (42%) were suspected due to reinfection and 11 (36%) due to false positive results. There were no treatment failures suspected to be due to RS-GC. CONCLUSIONS: Most patients with a RS-infection returned for a TOC, though return rates varied by jurisdiction and patient characteristics. TOC can identify and facilitate treatment of reinfections, but false positive TOC results may complicate interpretation and clinical management. |
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