OBJECTIVES: Risk of subsequent diagnosis of HIV in persons diagnosed with newly acquired syphilis, and syphilis in HIV-infected persons, are of interest as these infections are markers of unsafe sex. METHODS: From a nationwide register, all Danish men aged >16 years diagnosed with syphilis in the period 2000-2010 (n=1217) were identified, and subsequently data on HIV status was extracted from the Danish HIV Cohort Study. We used Kaplan-Meier analysis to estimate the 5-year risk of HIV and second syphilis infection, and Cox regression to determine incidence rate ratios (IRR). RESULTS: The 5-year risk of HIV diagnosis was 9.8% (95% CI 7.0% to 12.6%). Those with a second diagnosis of syphilis had a higher risk of being diagnosed with HIV (IRR=3.1, 95% CI 1.2 to 8.0). The 5-year risk for a second diagnosis of syphilis was 14.8% (95% CI 12.1% to 17.4%) and HIV-infected persons had a higher risk of a second syphilis diagnosis (IRR=4.0, 95% CI 2.8 to 5.9). Sixty-five percent of the persons were men having sex with men (MSM). Thirty-four percent of the HIV-infected persons had viral load >1000 copies/ml at time of syphilis diagnosis. CONCLUSIONS: The substantial risks of syphilis and HIV infection in men diagnosed with one of these sexually transmitted diseases indicate a high frequency of unsafe sex in the Danish MSM population. As one-third of the HIV-infected persons diagnosed with syphilis had high viral loads, our data support initiation of antiretroviral therapy in all HIV-infected MSM to reduce HIV transmission.
OBJECTIVES: Risk of subsequent diagnosis of HIV in persons diagnosed with newly acquired syphilis, and syphilis in HIV-infectedpersons, are of interest as these infections are markers of unsafe sex. METHODS: From a nationwide register, all Danish men aged >16 years diagnosed with syphilis in the period 2000-2010 (n=1217) were identified, and subsequently data on HIV status was extracted from the Danish HIV Cohort Study. We used Kaplan-Meier analysis to estimate the 5-year risk of HIV and second syphilis infection, and Cox regression to determine incidence rate ratios (IRR). RESULTS: The 5-year risk of HIV diagnosis was 9.8% (95% CI 7.0% to 12.6%). Those with a second diagnosis of syphilis had a higher risk of being diagnosed with HIV (IRR=3.1, 95% CI 1.2 to 8.0). The 5-year risk for a second diagnosis of syphilis was 14.8% (95% CI 12.1% to 17.4%) and HIV-infectedpersons had a higher risk of a second syphilis diagnosis (IRR=4.0, 95% CI 2.8 to 5.9). Sixty-five percent of the persons were men having sex with men (MSM). Thirty-four percent of the HIV-infectedpersons had viral load >1000 copies/ml at time of syphilis diagnosis. CONCLUSIONS: The substantial risks of syphilis and HIV infection in men diagnosed with one of these sexually transmitted diseases indicate a high frequency of unsafe sex in the Danish MSM population. As one-third of the HIV-infectedpersons diagnosed with syphilis had high viral loads, our data support initiation of antiretroviral therapy in all HIV-infected MSM to reduce HIV transmission.
Authors: Andrew D Redd; Marie Helleberg; Matthew Sievers; Stephen D Schmidt; Nicole A Doria-Rose; Daniel Bruno; Shelby Traeger; Craig Martens; Jannik Fonager; Gitte Kronborg; Zoe Packman; John R Mascola; Stephen F Porcella; Jan Gerstoft; Thomas C Quinn Journal: Infect Dis (Lond) Date: 2018-10-14
Authors: Carla Tilchin; Christina M Schumacher; Kevin J Psoter; Elizabeth Humes; Ravikiran Muvva; Patrick Chaulk; William Checkley; Jacky M Jennings Journal: Sex Transm Dis Date: 2019-04 Impact factor: 2.830
Authors: Brendan L Harney; Paul A Agius; Carol El-Hayek; Christopher K Fairley; Eric P F Chow; Norman Roth; B K Tee; David Leslie; Gilda Tachedjian; Margaret Hellard; Mark Stoové Journal: Open Forum Infect Dis Date: 2019-08-23 Impact factor: 3.835