serological assays with improved sensitivity over commercially available assays are needed to evaluate the burden of infection and the effectiveness of prevention efforts. We evaluated the performance of a outer membrane complex protein B (OmcB) enzyme-linked immunosorbent assay (ELISA) in the detection of anti- antibody responses in -infected women. OmcB ELISA was less sensitive than our elementary body (EB) ELISA, but it was highly specific. The magnitude of the antibody response was higher in African-Americans and those with prior infection. Unlike EB ELISA, the IgG1 response to OmcB was short-lived and was not maintained by repeat infection.
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http://dx.doi.org/10.1128/JCM.00275-18 | DOI Listing |
Trop Med Infect Dis
December 2024
Trachoma Control Program, The Carter Center, Atlanta, GA 30307, USA.
Trachoma recrudescence is a serious concern for trachoma control programs. Programs define recrudescence as the return of trachomatous inflammation-follicular (TF) prevalence above elimination threshold (≥5%) on district-level trachoma surveillance surveys (TSSs). This study aimed to determine potential correlates of trachoma recrudescence within a historically highly endemic region.
View Article and Find Full Text PDFBMJ Open
December 2024
Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, UK.
Introduction: Trachoma is caused by the bacterium (). The WHO recommends the SAFE strategy for trachoma elimination: Surgery for trichiasis, Antibiotics, Facial cleanliness and Environmental improvement. Multiple rounds of SAFE implementation have proven insufficient to eliminate trachoma in Ethiopia, where over 50% of the global trachoma burden remains.
View Article and Find Full Text PDFSex Transm Dis
December 2024
Department of Epidemiology, School of Public Health, and the Center for AIDS and STD, University of Washington, Seattle, WA.
Objectives: Women who report sex with women are thought to have lower risk for Chlamydia trachomatis (CT) infection than women who report sex with men only (WSM-only), but comparisons of lifetime burden are limited.
Methods: Among 1,418 sexually-experienced women aged 18-39 years participating in the National Health and Nutrition Examination Survey (2013-2016), we estimated weighted CT seroprevalence and Wald-based 95% confidence intervals (CI) in women who reported ever having sex with a woman (all reported having sex with men also) (WSWM) compared to WSM-only. We defined seropositivity as detection of Pgp3 antibodies and used stratified Poisson regression with robust standard errors to estimate prevalence ratios.
Sex Transm Dis
December 2024
Division of Infectious Diseases, Johns Hopkins University, Baltimore, Maryland.
Background: Infection with Chlamydia trachomatis (CT) can have distinct clinical presentations, such as trachoma, or lymphogranuloma venereum (LGV). Certain populations are at greater risk for LGV acquisition and transmission, which requires a longer duration of therapy than other urogenital CT sexually transmitted infections (STIs). Commercial assays are not available in the United States to distinguish LGV from non-LGV serovars.
View Article and Find Full Text PDFSex Transm Dis
December 2024
Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA.
Background: The etiology of nongonococcal urethritis (NGU) is incompletely understood. We sought to determine if genitourinary bacterial diversity or specific taxa were associated with incident NGU.
Methods: From August 2014-July 2018, men who have sex with women attending a sexual health clinic were clinically evaluated, including Mycoplasma genitalium (MG) and Chlamydia trachomatis (CT) testing, at enrollment and six monthly visits.
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